{
 "layers": [
  {
   "layerId": 0,
   "layerName": "elect_grid",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "1",
     "url": "a63185c98104c63fe70d599422c9d70e",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABUAAAAUCAYAAABiS3YzAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAgElEQVQ4jc2SUQ7AIAhDt6QH2VE56m6i2QcfI0JBY7Z+anm2BhwbhK+gbXB2rkLLgpOEqdGkcvseud5NI6/6wQwWoo9EcFSACrPp09BICvbSYjgUDPxr+YXUm4KuCt5FlJa1QPSiBWd2dKp+5p+RApFlH0KlMJTxPtBajIS2rFQHaXw4Dr7bBL0AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 21,
     "values": [
      "1"
     ]
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "Source of electricity: grid"
    }
   ]
  }
 ]
}