{
  "manageEntity": {
    "action": "Create",
    "entityId": "1455802679",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"vibesss yo!\",\"entity_id\":557303947,\"track_timestamp_s\":40}}",
    "nonce": "0xab959fe57bfa6c0fffcd10eab729fdc47b81660e825070a414af6c19ef12ab09",
    "signature": "0x7e6aa9e7f54e96587ac189a86f25947e253fc9cc30d1488816c0779d9bcb473f6d359384f6ad9ce1977c5a65ffeb1c35188d0ae49879f9a6d14f740b2c944f7e1c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}