{
  "manageEntity": {
    "action": "Save",
    "entityId": "11330778",
    "entityType": "Track",
    "nonce": "0x612ad13450443bcb76a5cd9ed2a6be2447c2c78bd080a0f17005b7061b52f77d",
    "signature": "0x1877cd8c245a3400a46942f3dfdb42cb417905666a69a380e55c938ccfac5a7c39961435e66d2f91712c182f2c050cb343bdc14ef09bd72f5ba509ce4ad42dc41c",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}