GET api/pay?MerchantId={MerchantId}&PaymentType={PaymentType}&PayingCurrencyCode={PayingCurrencyCode}&SalePayingAmount={SalePayingAmount}&MerchantReferenceNumber={MerchantReferenceNumber}&UserInfoId={UserInfoId}&CardholderName={CardholderName}&CardholderEmail={CardholderEmail}&MerchantCurrency={MerchantCurrency}&MerchantAmount={MerchantAmount}&FxQuoteId={FxQuoteId}&Redirect={Redirect}&IpAddress={IpAddress}&Telephone={Telephone}