{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Building Footprints",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "1",
     "url": "9a1434e1a36bd10a8bebf6bd4121c757",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAARUlEQVQ4je3UoRUAMAhDQURGAt1uXqpZqg+JJq78AU5EBKp6RGQLJ0diEYuimd2dIDUM2A59ojZgPxCM0oC/bOj5tCTPH+sVCReyfr1kAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "1"
     ]
    },
    {
     "label": "2",
     "url": "c91cd958c33d4a5f3e8a4a565c6ecfe4",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAR0lEQVQ4jWMxMTHZz8DA4MBAHXCABWRYw+IsqpjWEDvNAWQgVQHLqIEUAxbKjUAFowZSDlioYAYKGDVwpIThAVBJSyXzDgAA7GMJX1byGe4AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "2"
     ]
    },
    {
     "label": "3",
     "url": "37654f94200708ede1d9742da89f37cf",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAARklEQVQ4je3UoRUAMAhDQURGoh7PvNXFd6k+JJq48gc4ERGo6hERE06BxK47RVt7W4LUMGA79InagP1AMEoD/rJh5NOSvHjsfQmLx5fN2AAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "3"
     ]
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "Facility Type"
    }
   ]
  }
 ]
}