{
 "layers": [
  {
   "layerId": 0,
   "layerName": "ZIP Code",
   "layerType": "Feature Layer",
   "minScale": 1000000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "10db56621498456b6a445434b722a7db",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAUElEQVQ4je3UMQqAMAxG4RfIqZziydulvdbvpOgkJeKUN4UQvjE+kPgwPweDnoEEcYEGfcP2DDhRE4S/n65VYIEFFvgjKIiJWgZ6PNj7ItsBgBEQVUgBEG8AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}