{
  "manageEntity": {
    "action": "Save",
    "entityId": "24528",
    "entityType": "Track",
    "nonce": "0x693419654eb8a24e4d72d0245967645916f794578d3ba6595f4c44d16bd7133f",
    "signature": "0x7310a9f23fd56f54c437b9b70b7e91a2d89a743307772600525b76e6a05bec55576eb966772ddb817cc742f85274b79f28ee4d8a9b6d0e8c23e1eaf82e26c18f1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}