{
 "layers": [
  {
   "layerId": 0,
   "layerName": "tl_2019_us_primaryroads",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "f648c965d3e3884c3cc955d6edb9a630",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAOElEQVQ4jWNhoDJgGTVw1MDBYqDL3LkNDIxM9hSZ9P/fwT3JyQ20ceGe5OQGqhpITTBq4KiBZAAAnr4JU2zePG4AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  }
 ]
}