{
  "manageEntity": {
    "action": "Save",
    "entityId": "181614",
    "entityType": "Track",
    "nonce": "0x054667e597cc512d4c1786a30266eb4167025eef05fec2456d5e5283d6835765",
    "signature": "0x8af0672de781d750d0a27999df69609676046e845ac11d482080dff49b130e266c572b79b3c79f1130fa9473bdf35736937fc9c6d5d8bffb7a853f39a60faeb61c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}