{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059099",
    "entityType": "Track",
    "nonce": "0x2ba6bcefd383bae1f32e6b1c418a44c3c9f84a7b6efd6de27eb56405029da79d",
    "signature": "0x6fb3af6af707ebd0ba3c59af0fbde0494c432455dcf373a71c31211b04a1ea3961a21f7bacc015bb7e94702a70a53a710bfe303f20cacabe4290b5e21ba0617a1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}