{
  "DestinationPhoneNumber": "+12065551212",
  "ContactFlowId": "a1b2c3d4-5678-90ab-cdef-77777EXAMPLE",
  "InstanceId": "a1b2c3d4-5678-90ab-cdef-11111EXAMPLE",
  "ClientToken": "a1b2c3d4token",
  "SourcePhoneNumber": "+12065551212",
  "QueueId": "a1b2c3d4-5678-90ab-cdef-55555EXAMPLE",
  "Attributes": {
    "key": "value"
  }
}