{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Historic Buildings 1837",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "64bbae38dbf24cf0c395fd40d6144a3a",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA6klEQVQ4jd2UMQ6DMAxFPWRoBwbGducezL0U4VLM3IO9HRkY6FjZya+sKHFbYOqXkKUkPGznY0cHy/0FsI0Pa0ziT0BPRF2y1ilgnwO7b2D19SbxuUwS12VC1n08awJbwBhUXwJMdAlhfgw03wedsbeAeZgS1hXUl4BSyrlqijANjUC8N+62DVcxB2gRKPY4Vc3mj7g9GeLWSdknBfJGx2V86mFJLgN8W8OC8v4aMhytDCmaVbJk5aDKhzhPFhCeEij6hItSIMr9fi4DBFT6GX8zlJfCfLpo3TJ6g0mjJ86maaPBOpo6fMC+AI6uWQECsPJNAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "Historic Buildings 1861",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "04fe43b5db1c3345c4eb32eb8b307b80",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA7ElEQVQ4jd2UPQ7CMAyFPWSEHRaYeguQOvdSTS+VuRLcohNdYKcHQE79ihUlAdpOWKoc5eer7bzY0Mpm/gJYysfWBv4noCWiOpirFbCJgc03sOq89767PUffD4i6kb1ZYAkYg6rT7r0iY3d9kLvcdcQ2B4zDlGFeQW0K6FMpDpskTEMFiHPtYtlwFm6EJoFeHsVxO/snZkmEuHVS8gmBvFBzGp9qmDITAU7SyEF5vesHnElGSCJWHyVbDKp0iP2UA0JTHoo64aIUiGLPz0SAgPp6yjNDeiHMhpO5W0Zt0Gl0x5nVbTRY+6yt3mBfGWlYuqmeXuQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 2,
   "layerName": "Historic Buildings 1871",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "0fe87d24b86876a5fc5271f3a0d1f463",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA60lEQVQ4jd2UsRKCMAyGM3TS2VkHfQ4Y8akoT6UjfQ4ZcGbG2Uvoz+V6bVVgMndc7tL2I0n/xtDGZv4CWPqPrQ38T0BLRHUQqxWwiYHNN7DiehD/fLzE992IrBu/NwssAWNQUU0wsWpy7j6Quw06Y5sDxmHKEFdQmwJKKafzPgnTUA/EuXa1bLgKN0GTQJHH8bJb/BOzJkPcOin5hEBeqLmMTz1MmYkAZ2nkoLzedyPOJDMkL1bJki0GVTrEfsoBoSmBok+4KAWi2PMzESCg0k//zFBeCLNhMHfL6A0mjZ44i6aNBmuftc0H7BvpxVi4oRHYEgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 3,
   "layerName": "Historic Buildings 1884",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "a997445c47c21359addb8bccca339129",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA4UlEQVQ4jd2UwQ3CMAxFfciRe7sBN2boBKyUdKVO0Bl6YwN6ZwDkyB++osRA2xNfqiwl6dOP7TjIwQp/ARzsU81F/AmYRCQWa5GAYw0cvoH110uOj9uKCNejnXWBA2AK6gym6iyu0yL3aWHHyQNWYSysEzS1gPkqp3PXhDHUgPhv3t02/RvaBOb2UIdbFfY4RNWF2qcE6kbUa3zKYUuhAny1hgfVfXM4ew7FmjW7VNWg1Ic4Lx4QPZWhyBMKRSCpPb9QAQKa82nPjAvAsFQuelVGbjBpeOJsmjYM5ujq8AH7BPlXWKOENuwUAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 4,
   "layerName": "Historic Buildings 1888",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "5e22cafb8baf928c022c99734f62a756",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA60lEQVQ4jd2UPQ7CMAyFPWSACXoBEJykgoM1PRioJ6GCC4ROZUR288CKkgBtJyxVjvLz1XZebGhmM38BLP3H1gT+J6AloiqYqxSwjoHNN7DiuBX/uNzF922HqGu/NwssAWNQcdi8V/zYnW/kTlcdsc0B4zBlmFdQmwJKKsvdKgnTUA/EuWaybDgLN0CTQJHHYr8e/RMzJULcOin5hEBeqDiNTzVMmYkAX9LIQXm9bzucSUZIXqwSJVsMqnSI/ZQDQlMCRZ1wUQpEsednIkBApZ7+mSG9EGbDydwtozboNLrjjOo2Gqx91mZvsE+lnllM9hqN9wAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 5,
   "layerName": "Historic Buildings 1894",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "95b13abe152d567e9bdd31545510403d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA40lEQVQ4jd2UwQ3CMAxFfcgJroUpGKJjdJum23SMDtEpIFc4I6f58BUlBtqe+FLlKmmffmzHTnaW+wtgmx7VlMWfgF5E+mytJ+BQArtvYE13jvEx3xHhekjfmsAWMAU13Ym2lvcw3iSMV3bsLWAF9hbWCeprwHiUw+VYhTE0AfHftLlt9BRhgVaBsT3U4Vq5LQ5RdaH2yYG60esxPuWwJlcAvlrDgup+cjhZDiU1a3SpKkGpD/G9WED0VIQiTygUgaR0/VwBCGjMZ7pmXACG+XzRqjJyg0nDE2fVtGEwR1O7D9gnratY12/jYtwAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 6,
   "layerName": "Historic Buildings1898",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "f436061142d3a30f3006519b41f261de",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA4UlEQVQ4jd2UPQ7CMAyFPWSHA1RigjMwZudQSQ/F3rFnKBNSD1BugGzyJCtKHGg78aTIUn6+2I5jRzvL/QXQp8EaMvsTMBJRyOaCAvYlsPsGdr2dxM6P18dOC7zu014T6AFjEGBa4/0pQ10aLaAJ0x4raKwBJZTucqzCNDQBcW7YXDYK6mtAKY/ufFh9idviIV6dVPnkQF4IHEYrhzW5AlDUgvL6PC04U/WQUrGKl6xGHWI/WUDUlECRJzyUAlHp+7kCEFDJZ/pmCC+HxXzSemXkBp1Gd5xV3UaDtTW1e4N9A9nDWGQn4xF+AAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 7,
   "layerName": "Historic Buildings 1901",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "754b91027b6193d48bcce38fbba1bf90",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA6UlEQVQ4jd2UwQ2DMAxFfcgEiBE40C0YgU5EmKgdgS2aAyNEzFDZya+sKAktcKolZMlJHrbzY0MXm/kL4BA/tiXxPwEtEU1JbFLAOQc238C6ey9+e/ngnUfWc9xbBQ6AMagbA0xsDG59OlofTmdsa8A8TBniCmpLQCml6dsiTEMjEOeW07LhKtYALQJFHs2tPfwTcyZD3Dop+aRAXpi4jL0elsxkgB9p1KC8vjmPM8UMKYpVsmTLQZUOsZ9qQGhKoOgTLkqBKPf8TAYIqPQzPjOUl8JsGqzdMnqDSaMnzqFpo8HaV+3yAfsGDUZYwhIN/4gAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 8,
   "layerName": "Historic Buildings1908",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "9afba266de27921c29ff5e33efa34f3c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA7ElEQVQ4jd2UMQ6DMAxFPWRBYmJpb9AegxtwJMKRuAHHoDdoFyYk1somv7WixG2BqZaQkRMetvNjRweb+wtgHR62IfI/AT0RtVGsVcAuBXbfwJrqLP62zOLHZUbWXdhrAmvAGNRUJ7W0vvfTg/rprjP2FjADexviCupzQCnlWpRZmIYGIL4bdsuGq+hXaBYo8rgU5eafuD0Z4tRJyScG8kLLZXzqYc5cAviShgXl9XHNcLAypCBWyZItBVU6xH6ygNCUQNEnHJQCUer6uQQQUOlnuGYoL4b5OGidMnqDSaMnzqZpo8Ham3b4gH0Ck6NY86Xw1XcAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 9,
   "layerName": "Historic Buildings 1913",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "028d63237cf0412ad95e3f537ece30c5",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA2klEQVQ4jd2UvQ3EIAyFXVAldbbIEIxx20C2uTEyBFukJvXJFk+yEJi7JNU9CVni58M2xo4elvsLoC+DtVf2J2AkolDNBQXcWmD3DWxZXmLPM4nNOcHrrew1gR4wBgGmdRxvGerSaAFNmPZYQWMPKKHM89qFaWgB4tx+u2wU1PeAUh7TtF6+xN3xEK9OqnxqIC8EDmOUw55cAygaQXk954QzXQ+pFKt4yRrUIfaTBURNCRR5wkMpELW+n2sAAZV8lm+G8GpYrCetV0Zu0Gl0x7nUbTRYW1OPN9gPZBVYxBkJRmwAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 10,
   "layerName": "Historic Buildings 1921",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "8c304fc52f87fc1985b7308a6be8f8ea",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA7UlEQVQ4jd2UOw7CMAyGPWSHoTOMPE7RO/RATQ+UO/QUBUaYM9AbIJv8YEVJgLYTlipHeXy1nT82tLCZvwDW4WPrI/8T0BJRG821CtilwOYbWLPdiz/dvfhh9Ii6C3uLwBowBjWb3XsljN3tQu561hHbEjANU4Z5BbU5oKRyXFVZmIYGIM71s2XDWbgnNAsUeRzW1eSfmDkR4tZJyScG8kLLaXyqYc5MAviSRgnK68PocSYbIQWxSpRsKajSIfZTCQhNCRR1wkUpEKWen0kAAZV6hmeG9GKYjSdLt4zaoNPojjOp22iw9kVbvME+AMJxWLvShN+kAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 11,
   "layerName": "Historic Buildings 1928",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "a3741c037bd27fce95e064268519ae2c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA70lEQVQ4jd2UMQ7CMAxFPeQAcACQOsAhytKdQzU9VPcucIgyRKIHKEdAdvMrK0oCtJ2wVFlyklfb+bGhjc38BbDyH1sX+J+AlojqIFYrYBMDm29gxeUq/vV8iB+HHlk3fm8WWAHGoKKcYGLl5Ny9JXdrdcY2B4zDlCGuoDYFlFL2h3MSpqEeiHPdatlwFW6CJoEij93xtPgnZk2GuHVS8gmBvFBzGZ96mDITAc7SyEF5fRx6nElmSF6skiVbDKp0iP2UA0JTAkWfcFEKRLHnZyJAQKWf/pmhvBBmw2DultEbTBo9cRZNGw3WPmubD9g31F1YjPJpi1EAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 12,
   "layerName": "Historic Buildings 1935",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "178177ca66ba52e6c309450c2e74b286",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA7UlEQVQ4jd2UzQ2DMAyFfcgAtBMgcWyHYIp2HMI47RQMUY6RmIAyQmWTR60oSVvgVEvIUX4+bOfFhnY28xfA2n9sXeB/AloiaoK5RgHbGNh8A6vKq/jn9BA/Tj2ibv3eLLAGjEFVeVFL89gNd3LDTUdsc8AE7G2YV1CbAkoqx+KUhGmoB+Jct1k2nIWboUmgyONQnFf/xGyJELdOSj4hkBcaTuNTDVNmIsBFGjkor49TjzPJCMmLVaJki0GVDrGfckBoSqCoEy5KgSj2/EwECKjU0z8zpBfCbDiZu2XUBp1Gd5xV3UaDtc/a7g32BRtsWNAfd8VVAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 13,
   "layerName": "Historic Buildings 1945",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "67f05d691e5c7a3fa8b00ab56b185059",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA5klEQVQ4jd2UYQqDMAyF86MHGOwCMtjOIbh7We+l4Dk2GF5gsCOM1D55lDbb1F97IJFWP16TNE52lvsLYB0f1ZjEn4BeRNpkrSVglwO7b2DX6hLi4/VEhOsufmsCa8AU1FTnZaOR+X2Y7tJPN3bsLWAWxsI6QX0JGI5yOhyLMIZGIP4bN7eNnqKfoUVgaA91uFZui0NUXah9UqButHqMTzksyWWAS2tYUN2PDkfLocRmDS5VOSj1Ib4XC4ieClDkCYUikOSun8sAAQ35jNeMC8Awny5aVUZuMGl44qyaNgzmaGr3AfsGHElZDgYhRH8AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 14,
   "layerName": "Historic Buildings 1950",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "05dbbe1a897556b9f6e23b0e68d22ce9",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA2UlEQVQ4jd2UwQ0CIRBF50AHtmA8WQRHS7Ab2G4swSNFeDK2YA9mJvzkh8Cgu3vyJ2QSYN9+mGGC7KzwF8BYh6o08SdgFpHUzCUCLj1w+AZ2ulwtvl8PRLhe6l4XGAFTEGCs5/1mg36aPaALY8cEzSOgHeVwPA9hDK1AfFc2lw1B4who5aEO1ypscYisC5VPC9SFpMeY3eFIoQM0zaC6Xh0Wz6HUYjWXqkkdYr94QNSUQXFPSBSBpPf8QgcIqN1nfWacAIbldtLLMu4GnYY7zqpuw2COrnZvsB9hMlf64m7dZwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 15,
   "layerName": "Historic Buildings 1959",
   "layerType": "Feature Layer",
   "minScale": 80000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "ce0646d1c2d6d93f63b3983b5f23c3d2",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA7ElEQVQ4jd2UMQ6DMAxFPWRox27MXIAeAYneK+FercQR6AWY2RjpWNnkIytK0haYaglZcpKH7fzY0MFm/gJY+4+tC/xPQEdENohZBWxjYPMN7Hq7iB+Hl/czsm793iywBoxBVbPA2Kpm8c/HRP190hm7HDAK04a4groUUEopynMSpqEeiHPdbtlwFf0CTQJFHkV52vwTsydD3Dop+YRAXrBcxqcepsxEgKs0clBeH4cZZ5IZkherZMkWgyodYj/lgNCUQNEnXJQCUez5mQgQUOmnf2YoL4S5MJi7ZfQGk0ZPnE3TRoO1z9rhA/YNM9JZJjfMI1EAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 16,
   "layerName": "Historic Buildings 1964",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "63c3cd5b7781f92bd7ff1a0d4d827cbb",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA5klEQVQ4jd2UMQ7CMAxFPeQArExF4gacoFOv1fRanXqC3gAJJlaOgOzmo68oMdB24kuVpSR9+rEdB9lZ4S+AbfpUUxZ/AkYR6bO1noBDCRy+gXWni8Xr84EI10M66wJbwBTUNQvM1CxhvM8y3mZ2HD1gGUbCOkFjDWhXOR+OVRhDExD/TZvbRm8xLtAq0NpDHa5V2OIQVRdqnxyoG71e41MOawoF4Ls1PKjuJ4eT51BSs5pLVQlKfYjz4gHRUwZFnlAoAknp+YUCEFDLZ3pmXACGxXzRqzJyg0nDE2fVtGEwR1e7D9gXKa1Yn2ky4fsAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 17,
   "layerName": "Historic Buildings 1975",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "349bfb145d2f34e6ff47376ecadfa5ab",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA7UlEQVQ4jd2UvRHCMAyFVbhJmwZWSAMrZAVYKM5CsEJWgMYrkMZtWk6KH+h8toEkFbrLyeefL5L8LEMbm/kLYBs+tiHyPwEtEXXRXKeAfQpsvoHVx7P46eFmPzpE3Ye9RWALGIPqw+m9Esb+fiV/u+iIbQmYhinDvILaHFBSqXZNFqahAYhzw2rZcBZ+hmaBIo9q3yz+iVkTIW6dlHxiIC90nManGubMJIAvaZSgvD6NDmeyEVIQq0TJloIqHWI/lYDQlEBRJ1yUAlHq+ZkEEFCpZ3hmSC+G2XiydMuoDTqN7jiLuo0Ga1+0zRvsE6CSWQuosdgSAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 18,
   "layerName": "Historic Buildings 1984",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "0f9a7a2900549fe5db2896bdbd3694c8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA7UlEQVQ4jd2UPQ6DMAyFPWRiZmvn9gisHKA9E+FM7QFYc4Qy042ZubLJo1aUpC0w1RJylJ8P23mxoZ3N/AWw9h9bF/ifgJaImmCuUcA2BjbfwKryKv45PcQPU4+oW783C6wBY1BVXtTSPHbjndx40xHbHDABexvmFdSmgJLKsTglYRrqgTjXbZYNZ+FmaBIo8jgU59U/MVsixK2Tkk8I5IWG0/hUw5SZCHCRRg7K68PU40wyQvJilSjZYlClQ+ynHBCaEijqhItSIIo9PxMBAir19M8M6YUwG07mbhm1QafRHWdVt9Fg7bO2e4N9AekhWMxWZmIiAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 19,
   "layerName": "Historic Buildings Combined",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "df52174c26ee85846226e7fd14963d3c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA6klEQVQ4jd2UPQ7DIAyFPbC1e7YMOUeGSO29IPdqpQycgyFb9nSvDLzWQkDbJFMtRUb8fLHNw4oONvUXwCF+bFPifwIaItLJnBbAMQdW38D65ur9/HDBrw5Rj3FvFTgAxqC+uYilMLbLnexykxGbGrAAexvmBdSUgD6V9twVYRIagTg37ZYNZ2EDtAj08mhP3eafqD0R4tZJyCcF8oLmND7VsGQqA3xJowbl9Xl1OFOMkKJYfZRsOajQIfZTDQhNeSjqhIsSIMo9P5UBAurrGZ8Z0kthJp2s3TJqg04jO86mbiPB0lft8Ab7BL6YWMVozv4dAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}