{
 "layers": [
  {
   "layerId": 3,
   "layerName": "Main Roads",
   "layerType": "Feature Layer",
   "minScale": 100000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "c1b5680c1869fc41068ea1033e428d71",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAaElEQVQ4je2UsQnAMAwEL6ChVGYLz+EJ4g20UkptlSBIIL2/SOEDWd0hv4wNMbaE/81wCFxnVQkvNBx1mLvTe6f6DJlJRGAKWfEOpl9KRGivnJm01nQTAhuwPzXLsO8bEghZv8088gxvitYb+KTS+YwAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}