{
 "layers": [
  {
   "layerId": 0,
   "layerName": "HistoricImages",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "f7f5ad78400cd3c03fc4b5133d7d1a24",
     "imageData": "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",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}