{
 "layerEstimates": [
  {
   "extent": {
    "ymin": -1643352.0163999982,
    "xmin": -19951914.9256,
    "ymax": 11554348.2474,
    "xmax": 20021886.4032,
    "spatialReference": {
     "latestWkid": 3857,
     "wkid": 102100
    }
   },
   "layerId": 0,
   "count": 288
  }
 ]
}