{
  "content-length": "304",
  "accept": "application/json",
  "authorization": "Bearer",
  "x-ms-wf-requestorid": "XXXXXXXXXXXXXX",
  "s2ssecuritycontext": "XXXXXXXXXXXXXXX",
  "client-request-id": "XXXXXXXXXXXXXXXx",
  "e2eactivity": "XXXXXXXXXXXXXx",
  "content-type": "application/x-www-form-urlencoded"
}

{"data":"grant_type=client_credentials&client_id=XXXXXXXXXXXXXXX..."}