Example

curl -i -X POST \
            -H "Content-Type:application/x-www-form-urlencoded" \
            -d "apiKey=1234" \
            -d "storedCardId=244-1481634103-0-1" \
            -d "amount=1000" \
            -d "currency=EUR" \
            -d "referenceNo=ref-123123123" \
            -d "paymentMethod=VISA" \
            -d "returnUrl=https://returnurl.com" \
            'REQUEST_ENDPOINT_URL_COMES_HERE(SEE BELOW)'