{
  "manageEntity": {
    "action": "Create",
    "entityId": "1866360477",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"That legendary!!!\",\"entity_id\":1173255822,\"track_timestamp_s\":76}}",
    "nonce": "0x7940efd60eb3e3cf737b343b5b904ddf24e708b66dbabed88dffdf8b3980d81b",
    "signature": "0xb86ea13d7172e84171319b9c710d4038f253d34cc981456033fc82a56aa4a5ae1856fdd1ef32177ea2f5edca6da029885d097e91f888acbb3c666588365070cb1b",
    "signer": "0x938cBdC7e7Ac6713F8eB75533FccAa680a4a0BBB",
    "userId": "71429"
  }
}