{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Terrain_contour",
   "layerType": "Feature Layer",
   "minScale": 10000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "ae1681efbe0d9370e6890261b92be6de",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAQUlEQVQ4jWNhoDJgGTWQYsBCuRGoYMQayLOwgeE/oz1FJjH+P8jwJb6BRi78Et9AXQOpCFioaRgIjBpIORj8YQgA74UIJMFEboYAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}