{
  "manageEntity": {
    "action": "Save",
    "entityId": "929000",
    "entityType": "Track",
    "nonce": "0x863ce0d599626ecc5fefc97898a4deeba57410dacd792997e07562b690783c50",
    "signature": "0x1e9e3237212300e15ba6a374045ea2383734b4d5fb3a72549d4719b041a8fa090489dab4bc858585486526f7b9e1afe8ba4a9e3a9dee31b365482e191798f2811b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}