{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Railroads",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "d41d2b4888aaf4c80883c3c30650e168",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAeklEQVQ4jWNhoDJgGTWQYsAyvAxMS0vTBdGzZs26TBUDmZmZxaFMwgZmZGQ0EDLw////Yv///xfPyMiwQZebMWNGA8kuBBnGyMj4Ep8aFnQb8IHMzEwXED19+vQ9BA0kBvz9+xev60g2EF/sDtOETQxgIUoVCWDwGwgArdshqHWxnuQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}