{
  "message_id": "<MESSAGE_ID-reading-test-100>",
  "data": {
    "connection_id": "test-100",
    "readings": [{
      "connection_id": "test-100",
      "reading_time":"2022-03-15T15:00:00.000+08:00",
      "water_flow": [
        {"channel_id": "id_this_is_channel1", "reading": 120},
        {"channel_id": "id_this_is_channel2", "reading": 120}
      ],
      "water_temp": [
        {"channel_id": "id_this_is_channel1", "reading": 120},
        {"channel_id": "id_this_is_channel2", "reading": 120}
      ]
    }]
  }
}