{
  "manageEntity": {
    "action": "Save",
    "entityId": "1614842173",
    "entityType": "Track",
    "nonce": "0x9944e73b8f06648228036fca78b49cf0ab812acbd0562bff4a24c082d13734bc",
    "signature": "0xe6d0951aecafcb2b5b04fb9b3c8f259b46729d1ca2dc66da403326b915cfca351371bf014c51d7566e993876ee54325fc130a3ad8b7d023ca0f1c2b44a3659ad1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}