{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Eléments antibruit (bruit routier)",
   "layerType": "Feature Layer",
   "minScale": 1000000,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "87df3573bfe8b137d2672f1e04792e4b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAS0lEQVQ4jWNhoDJgGTVwJIRhtpP/f6oayAAFTQXLKDKobkIUwkBKDYOZATKUNpFSNyGKul5GFqAUsEzdt5GRKiYNnYTNMGogA4UAADC7EbkP93PUAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}