{
 "id": 4,
 "extent": {
  "xmin": -8879446.5800703336,
  "ymin": 5620161.1340646911,
  "xmax": -6337967.0693017775,
  "ymax": 8998561.0323934276,
  "spatialReference": {
   "wkid": 102100,
   "latestWkid": 3857
  }
 }
}