{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Brownfields",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "4b56a6ee9d40cae30ed1ed847c54294d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA1UlEQVQ4ja2U4Q2EIAxGvx+d5hxCHMJ5KPMwxNUhcJ5LIWfOBLCHNiFE0zxf01rCw0HGvDeADQA/AXRugtNbEgTI5xbQ+xXYEiApg28Bndq5F6BH4RzzzaNAr3bHwwpwhB8FMq/F7vSyQLkFJaud1ZI6dm31jiU1GlG1s1hSJb87FsdXp/oYUS1ZEkKIbUvZc051yKkhwNwBLqXQ5d8uh5plKIMdxuYwnoFaKsdc5vCfEn4tr+wsQLXU8HPp6iPbRmSH13Kv7OzAlEGzZUatG/tyU3/jAyEeVy2zNnJiAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}