{
 "id": 18,
 "extent": {
  "xmin": -8621149.9416812714,
  "ymin": 4641272.3743181396,
  "xmax": -8172299.8632713798,
  "ymax": 5028314.5098687559,
  "spatialReference": {
   "wkid": 102100,
   "latestWkid": 3857
  }
 }
}