{
 "layers": [
  {
   "layerId": 0,
   "layerName": "pm10",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "688b8222db664c3f0d833595b32c1ea7",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAFRJREFUOI1jYaAyYBk1cNRAOPiPxGak1MD/bQzycE4Vw8P/+AwlZCCKYQwMDAxtDPJ4DR36kcJYxfAQPQwZGCgIQ7ihyHxKXEiUIeQYSDQYNZByAAAJWxCt3w9TjAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  }
 ]
}