{
 "layers": [
  {
   "layerId": 0,
   "layerName": "River miles",
   "layerType": "Feature Layer",
   "minScale": 15000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "49338999d08b1372900f17e4983e69ca",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAgUlEQVQ4je3Tyw3DMAiA4f/ghdIJmCUZBDxIOwsTxCtFcfExikp6qKJy8EvmExZy4ctR/uDlKLcADdBYO1BjToHSMVuCWwVvEqhlQEUm0Dl2M9QX2FOzoCCPkytXm+JrH7Ng7c/bkVGpt/d5ErRejTeNZgwsXSGRfAjc86d8FL8PbntSIInarvFtAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}