{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Map Index Sheet 1:250 000",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 500000,
   "legend": [
    {
     "label": "",
     "url": "6ca43830f02eaed7d770eaae6c03f329",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAQUlEQVQ4je3UoQ0AQAhDUUi6N2HynsGgKer4A7wUAxhBEwYl1kDPdBvEunRvoSrIpOrAeRAYrQPn4WOQos8tX/gAkP0KSbNtQRcAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}