{
  "manageEntity": {
    "action": "Create",
    "entityId": "234272817",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Good \",\"entity_id\":2122284481,\"track_timestamp_s\":130}}",
    "nonce": "0x9a0795dfae41f91dec7eae4a2a2ebeee957073a123e2fff91e8c54cb0c5ff777",
    "signature": "0x588c90cced170ceb8ac6ac98f065b977caeddadef14338cfc7fc79eeed9aa43a59b9c2ae75064ee185eaa617190e98c46dabc4dd1c6fc4873a3bd385fc8f9fcd1c",
    "signer": "0xe8799961391618673919b054071fd957e4024eF9",
    "userId": "190806454"
  }
}