{
  "manageEntity": {
    "action": "Create",
    "entityId": "406643951",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"HANDS UPPP\",\"entity_id\":761584783,\"track_timestamp_s\":86}}",
    "nonce": "0xb65121f366fcf62e2ff5ada838fa3256f4ec792309f6a5328bf2043f59366946",
    "signature": "0x009ee99edb584ba8d86c231a02eb9c93ffde894475ff2ac4d71575ee96f3a1b049b8ce2ab90f6d238b7eb2d4074af3a291d6df2a3bd2f43ab3fa4afd7e11d5551b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}