{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Blockgroups",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "02f92fefc2c48fa70ff6885d159eb895",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAANUlEQVQ4jWPJy8v7z0BFwMLAwMDQ2ZJCFcPKa+ZADKQmGDVw1MBRA0cNHDUQycDymjlUMxAAfPcHKf4Sj/cAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  }
 ]
}