{
 "layers": [
  {
   "layerId": 0,
   "layerName": "test_fieldmap_branch",
   "layerType": "Couche d\u2019entités",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "400643439ab5f4152aacd3924c2dbd3f",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAiElEQVQ4jWNhoDJgGTWQYsAybAxsgNIHoJgiAxtchfXqQYx7317W3/3+shHJApINdFDmFK93FdKF8IR0GXa/u1y/++0lBlyGshAyUIlLnIASCiPl3reXDPjCkYWA/gaQ90BhB3MpNAzJNhAEGu5+f3ng7veXDmAengghxcsEk8vwyylEg8FvIACV5Cn7K2pYzQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}