{
 "layers": [
  {
   "layerId": 0,
   "layerName": "buffer_50m",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "da4c287e2f6402a7ee29b87e1d8ac2d0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAmklEQVQ4je2USwqAMAwFnyXXEtqTiSdTEDxWI6EuYvxVW3fOMoQhIR9izAPAHhtiaNCOuIAxecANNk57WRlUU3Yk7IE43rUrSA5jCoCTDrsTYZ7MSAE4LYxBJ+TK9pUm6I3E0ijH50MphsoVW35hOZS+RuLtTrJykH5BsvFPpWzemJmy83KbudJV5nXMrk0nh55T6cWDrUt14QLoTDYaBCUWyAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 2,
   "layerName": "buffer_250m",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "f75a66e34a8fd40a4aaf7864fdc3df1b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAaElEQVQ4jWPJy8tbzUBFwAIiHv/XOPX0j+pTSgySZrktLct4wwxsIMiwU39cKDLQjIGBQZb1BsSF1AQsowZSDFgoNwIVjBpIOWChghkoYNRAygE4DEGFI6g8owSAzIAbCCppQYUjNQAA+MIV1qfICnMAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}