{
  "manageEntity": {
    "action": "Save",
    "entityId": "343026",
    "entityType": "Track",
    "nonce": "0x6b26ca401700290c34b8a9c8da514e09e9c4e2642bfcf6b2fb05eb55085b929f",
    "signature": "0x5095b56031dc06be1c9db1b106f4c459e60b4d577e433556de3126ee1e3483292c6d3dadb387caeee1ea6a4e30e0ff27bcff09ac85e0629f58589e163b57e98c1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}