{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Sirens",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "72f5d4400ae7ff1efff3c841a656a44e",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAi0lEQVQ4jWNhoDJgGTWQYsAybAwsh9JHGRgYjlBqYHl5U0YDiHHswLnfh/edamVgYOgk10AbWyez6vyqJA4QB0RPbJvX0Fk3gwGXoSwEDLS2cjBiJewJCiIF5G1oWJJlYCfIe8cOnKuGuRQahkcocWHn4X2njh7ed8oaxqeGl48QSi7DL6cQDQa/gQAVDyosRVWePQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}