ArcGIS geomeries converter

{
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  "ymin": 4534651.565967717,
  "xmax": -13609168.207509262,
  "ymax": 4557353.363368384,
  "spatialReference": {
    "wkid": 102100,
    "latestWkid": 3857
  }
}

{
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  "ymin": 37.68236684303815,
  "xmax": -122.25323804959042,
  "ymax": 37.84358670736482,
  "spatialReference": {
    "wkid": 4326
  }
}