{
  "manageEntity": {
    "action": "Create",
    "entityId": "654832093",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"fireeee\",\"entity_id\":1475207700,\"track_timestamp_s\":36}}",
    "nonce": "0x0a0f83edd3d33c6c001f5240c4f9f7b4f48d412d268b082623b0206abf50fe81",
    "signature": "0x2ecf9dea034047fe778088bd71011a6d6eb90555e61d76df5b76275fdcdd6cb80b6a86d124c18db86ea1fca9216673ff21582d2b65a93fdf5ff353f5f6557b621b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}