curl --location --request POST '/payment' \
--header 'paymentType: SEPA' \
--header 'Content-Type: application/json' \
--data-raw '{
"merNo": 111111,
"merOrderNo": "222222",
"currencyCode": "USD",
"sourceAmount": "100.05",
"returnUrl": "https://example.com",
"notifyUrl": "https://example.com/notify",
"sign": "906FDF4880B00B00281F2AB61AE9A721",
"ipAddress": "192.168.1.1",
"userId": "111",
"email": "example@gmail.com",
"userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36",
"billingFirstName": "name",
"billingLastName": "name"
}'