message_id: tracking_basic_property_1cXrbXa1BLQiz77Kq3YDEhnxKXs
exchange_request_body: {                                           "channel":"server","context":{"library":{"name":"unknown","version":"unknown"},"protocols":{"sourceId":"DvlHmJl8dt"}},"event":"With properties","integrations":{},"messageId":"tracking_basic_property_1cXrbXa1BLQiz77Kq3YDEhnxKXs","projectId":"DvlHmJl8dt","properties":{"Required":"hello"},"receivedAt":"2020-05-28T17:10:50.809Z","sentAt":null,"timestamp":"2020-05-28T17:10:50.809Z","type":"track","userId":"mme-e2e","version":2,"writeKey":"TxoMn5JYnDDUFssuE0w0nqKCFMKKZgCe"}