curl --request POST \
  --url https://api.example.com/public/concat-feed-by-slug \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "slug": "http://www.is.fun/some-amazing-category-here-z51",
  "publicSessionToken": "<string>",
  "languageID": 1,
  "calendarPeriodTypeID": null,
  "page": 1,
  "pageSize": 10
}
'

{
  "success": true,
  "data": "<unknown>"
}