{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Bridges",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "dec6b60aa5f34d05540c7a51efea2159",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAjElEQVQ4jWNhoDJgGTWQYsAybAwsh9JHGRgYjlBqYHmYq1IDiHHt/vvfV+68b2VgYOgk10AbHRXB6gBHeQ4QB0Rv2P+wYdXuewy4DGUhYKC1lqIgK2FPUBApIG9Dw5IsAztB3rt2/301zKXQMDxCiQs7r9x5f/TKnffWMD41vHyEUHIZfjmFaDD4DQQAkOQrgVqR0nkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}