{
  "response": 
    {
      "md5": "xxx",
      "faceAnnotations": [
        {
          "fdBoundingPoly": {
            "vertices": [
              {
                "x": 738,
                "y": 483
              },
              {
                "x": 805,
                "y": 483
              },
              {
                "x": 805,
                "y": 550
              },
              {
                "x": 738,
                "y": 550
              }
            ]
          }
        }
      ]
    }
  
}