{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Census Tracts (2010)",
   "layerType": "Feature Layer",
   "minScale": 288895,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "502821035502f08047862f2fbb82c703",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAATUlEQVQ4je3UsQnAMAxE0X+gHbNGPInXcKZUCoNx5cJcqV+Lh6qL8ZIYC4Cne8yvaYIAknQLZeb6KE6HNxVYYIEFnsF9giygq4C5tK5+j8IOf4rd1hkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}