{
  "manageEntity": {
    "action": "Create",
    "entityId": "14526752",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"ID???\",\"entity_id\":364227905,\"track_timestamp_s\":1351}}",
    "nonce": "0x27a3e81a72a22719e5295575be4d03f116f338db4baa60711dabbce13fffe544",
    "signature": "0xa85e67fe5d64a66f305064ff71c1ffb07d6ac7822d2838d6881c6287c4df3862463d810a0d4469c3a24a4ee1a9313bf1edee213672e92e303bca1b41fc23f05d1c",
    "signer": "0x7D273271690538cF855E5b3002A0dD8c154bB060",
    "userId": "1"
  }
}