{
  "manageEntity": {
    "action": "Save",
    "entityId": "1906505486",
    "entityType": "Track",
    "nonce": "0x0236be93c55ca1988611e91bbbc017d3601fdddd31400e5fcf4d2278061595ec",
    "signature": "0x1eb63c7a9d1c3bf4ef9474406047d8141a9907769ea1d58dcb467779e837b13a05257c705f9ad2c195cc0380f68e2ab4bab618845162a7fcbdade6de932e41f31b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}