{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Road Centerlines",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "4f8eacffbec9ff0a37cf9a516c3dfa94",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAOUlEQVQ4jWNhoDJgGTVw1MDBYuDGjRsbmJiY7Ckx6N+/fwf9/f0baONCf3//BqoaSE0wauCogWQAAFZcCb6xHOWzAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "City Boundary",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "0c543bba15096fcdff1bc4ca96d4a92a",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAVklEQVQ4jWN5xrDyPwMVAQuMwcjAeIASg/4z/HeAG8jIwHhAkiHMkRIDnzOs2v+f4b8DC2GlpIFRA0cNHDVw1EA6Gvif4b/Dc4ZV+ykxCKWARRagFAAAcxkU6XesWCAAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  }
 ]
}