{
"transactionId": "sit-20251205-1",
"amount": "100000",
"currency": "VND",
"expiryIn": 29
}curl --location --request POST '/partner/merchant/getQRPayment' \
--header 'key: 1234567809' \
--header 'Content-Type: application/json' \
--data-raw '{
"transactionId": "sit-20251205-1",
"amount": "100000",
"currency": "VND",
"expiryIn": 29
}'