var gas = await web3.Eth.DeployContract.EstimateGasAsync(ABI, byteCode, privateAccount);

            var balance = await web3.Eth.GetBalance.SendRequestAsync(privateAccount);
            var transaction = await web3.Eth.DeployContract.SendRequestAndWaitForReceiptAsync(ABI, byteCode, privateAccount, new HexBigInteger(gas.Value));