public async Task <IActionResult> ChangeWalletsBalance([FromBody] UserWalletBalanceOperationDTO userWallet) { if (userWallet == null || !userWallet.UserId.HasValue) { return(BadRequest("Invalid model.")); } var result = await _walletSrv.ChangeWalletBalanceAsync(userWallet); if (result.IsSuccess) { return(Ok(result)); } return(BadRequest(result)); }