{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Billboards",
   "layerType": "Feature Layer",
   "minScale": 5000000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "7eb6506b0386ad252b1cf4a3ed871941",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAi0lEQVQ4jWNhoDJgGTUQF3BAYh8gPwyrDv3HKt5mx0i6gVVQw9rsHJFc5cBQdWg/WA6HoSxEGYbgM4LF8BjKgje8QBpxyVGUDtvALmVAcS3CggOkG0gokggYiJksML1OsZcZcbjwAHEGggzADCvslhDtQmRD0b1MVsJGaCQ62xEbhgQNYUACI7A8BACCpzcHpIn9sAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}