{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Mask",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "710cdd15305467b747471ee37776ba56",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAQklEQVQ4jWP5//+/LgMDgw4DdcAVFqhhkVQycDnIQKoCllEDKQYslBuBCkYNpBywUMEMFDBq4EgJwyugkpZK5l0BAGWnB/YU4KMCAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "Street_Markers",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "f7288b121d827c97f01e6de70c0b089c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAQklEQVQ4je3VsQ0AIAwDwUfyIFmKntHZJIiSOu7IDfCFGysni0HgkGzZYtcghJk6WKZ64tXBOhkajw7+sWGynRdwAAogCCYC8GKCAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}