{
  "manageEntity": {
    "action": "Save",
    "entityId": "2060283939",
    "entityType": "Track",
    "nonce": "0xb8a2725d091d0145a70b5f34df11a878d9cd89a5297bef9e0c085617e5b2395a",
    "signature": "0x99cb8057c736ef4e175399d81fb11aa0711ae6fdb2ab29b0f209ee71efd56bf44b25ea475b7f2292d6595896fb891e4468e7e8d23044625222df0269e55c0a781b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}