curl --request POST \
  --url https://api.example.com/concat \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "languageId": 1,
  "concatSlug": "court-dismissed-lawsuits-and-decision-is-reasonable-and-firearms-are-prohibited-but-ban-woul-ckqqi4bit",
  "concatCode": null
}
'

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