{
  "manageEntity": {
    "action": "Save",
    "entityId": "522597585",
    "entityType": "Track",
    "nonce": "0xc0fcdcdd04d42de3406d7d24b4fda210588ae36238ddefabb0485b0a28dc5f7e",
    "signature": "0x8cd1e0ea4e55966d7e07891844fbd2db763609e0ff54226aa0c667db0676ba8b2b089b35022c39042d5268f3584567bafb304468f88e93e80ae36333391bb99d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}