{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Total Population by Block Group",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "88b6a8b0ea8d1134c048daea8776c34e",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAASklEQVQ4jWMpLCzczsTE6MBABfDv3/8DLExMjA6VxSkc1DCwvXeOAws1DEIGowaOGjhq4KiBowZCDfz37/+B9t45DtQw7N+//wcAlksTTgW9HlEAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}