{
  "manageEntity": {
    "action": "Save",
    "entityId": "1222268066",
    "entityType": "Track",
    "nonce": "0xbf06801b8bb77a5b23625af589557f29b72902a9d7bdfe7f4a4a32f43f851e63",
    "signature": "0x68ba912d95ef855752561c50d7567b9bb111ce49fc86fbda75b41001ffb289fe6792d0212bea9019eefeb96df83ec3dfd509d2ff4900f0825a3fe6ae23a241c11c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}