{
  "manageEntity": {
    "action": "Save",
    "entityId": "1020488755",
    "entityType": "Track",
    "nonce": "0xb074fa68881ea94966b3d654978a3c47bc62f89db343be6d686ecf415e4e5e6e",
    "signature": "0x97c11f6f426f0605069ee49e89c438d59b90de472ded13ea31078a48023fde372ea5e0641f2549d8c9c3a8c84f8eb293e7991881e6281f36718271c9fa8f4f091c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}