curl --request GET \
  --url https://api.example.com/discounts/{discountId} \
  --header 'Authorization: Bearer <token>' \
  --header 'x-environment: <x-environment>'

{
  "type": "<string>",
  "title": "<string>",
  "status": 123,
  "detail": "<string>",
  "instance": "<string>"
}