{
  "manageEntity": {
    "action": "Save",
    "entityId": "1018318437",
    "entityType": "Track",
    "nonce": "0xa04055edecf5c573b71c743f327253a146eebe88297130c034afa3689db842c5",
    "signature": "0xb482c5aeb491c5e45083ab6a96a597c54039168808262ab6f45598ed785bd6d32ee176e00ae2dc63fc48f3354132f1a97baf857a5fbc565dfec0b9be89cadc5e1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}