{
 "layers": [
  {
   "layerId": 1,
   "layerName": "i40_mile_markers",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "67b84ffcd8e09ec4cd14af7fe05e20e3",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAgUlEQVQ4jdWTwQnAIAxFn+BgDuA43ov3jtMB3Kw91INJpbQ2UPzgISE8TH7iMZafGxgTgZ1FJB15WylDwKqg4nxXPNkMY7q0p2OAEJNMtDOVPzwN6EF0TWtUqa8DNNBsQEdG7ll3seHhYusLqG5KIJSvl/JKvwCLGbDOyg44InPgAYPUHQ/23D4KAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}