{
 "layers": [
  {
   "layerId": 0,
   "layerName": "survey",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "18c6a370f59201566cf63abc3e649ab1",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAhklEQVQ4jWNhoDJgGTWQYsAybAxsgNIHoJgiAxu8xH3rQYzbX2/W3/5yqxHJApINdFDlUav3EveBcn0Ytr3cUr/t5WYGXIayEDSQW52AEgoj5fbXmwz4wpGFgP4GkPdAYQdzKTQMyTYQBBpuf7l14PaXWw5gHp4IIcXLBJPL8MspRIPBbyAAqtkpkOeRoDoAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}