{
  "manageEntity": {
    "action": "Create",
    "entityId": "1503226753",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"♡\",\"entity_id\":272410988,\"track_timestamp_s\":81}}",
    "nonce": "0xbbf613aee08e00109d8ebfec87c4f0efe2450ab0408b07d2b1b9044c5111adbd",
    "signature": "0x35fb05b56821ea423ee959ecf4629a66267f849e7b5e44102fc9704f091dd93d53d1bed2a5c1919501d7017d1d0eade0e9f03dcb988679872816d20e70eebcf21b",
    "signer": "0x5D040c7e172B07431383B4bd6Fdd84ed67B8Ba0f",
    "userId": "508547804"
  }
}