{
  "manageEntity": {
    "action": "Save",
    "entityId": "341990",
    "entityType": "Track",
    "nonce": "0x96a5f7f51d328cf4c1921900aadfdcd3e21d398dbe87bd6d5295d8d5009572ab",
    "signature": "0x7d92ce59f2f3ea30668960475e2306a059702f7993dae8c716c18684e0c5c4cd20818e4e654229e00d88e2efd60a303b5dc349cc4f323e348c247d5c8bd9e1b51c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}