{
  "manageEntity": {
    "action": "Save",
    "entityId": "1024055",
    "entityType": "Track",
    "nonce": "0x83fe3519e3d77f8450e90e74440f257e7b96d69cdbde44592296b75c3c7fbd84",
    "signature": "0xf877c23972288256a4d613112205d2d229f6ee04f507fcfba7f121572aae21023bb39023c2e0529d92103ed447b467555c8abf98c521151684e75abdbfdd97f01c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}