{
 "layers": [
  {
   "layerId": 1,
   "layerName": "Unit Trains",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "7646ebad7777bf8c5e460656b2483e54",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAATElEQVQ4jWNhoDJgGTVwcBvoQKFZB1AMnDlz5n5KTEtPT2dEMdDY2JgS8+BgaEUKdQ08e/YsdQ1MT093pKqBDNB0RE0DqQJGDaQcAAAIqwpHB00lWwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20
    }
   ]
  }
 ]
}