{
 "layers": [
  {
   "layerId": 0,
   "layerName": "ptz",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "4168f2efd0913b238af58ed91e8b292f",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAjUlEQVQ4jWNhoDJgGTWQYsAybAwsh9JHGRgYjlBqYLmEl2sDiPH1zr3fn2/dbWVgYOgk10AbXjXlajFXBw4wz9WB49XuAw0vtu1mwGUoCwEDrblVlFgJ+oGSSAF5GxqWZBnYCfLe1zv3qmEuhYbhEUpc2Pn51t2jn2/dtYbxqeHlI4SSy/DLKUSDwW8gAJysK5h7TW2WAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}