curl --request POST \
  --url https://uat-interface.haipay.asia/common/voucher/pdf \
  --header 'Content-Type: application/json' \
  --data '
{
  "appId": 123,
  "orderNos": [
    "<string>"
  ],
  "sign": "<string>",
  "getFee": 123,
  "isAmount": 123,
  "getSubject": 123,
  "lang": "<string>"
}
'

"<string>"