curl --request POST \
  --url https://api.example.com/admin/concat/feature-and-pair \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "concatCode": null,
  "concatSlug": null,
  "concatID": 19382,
  "isFeatured": true,
  "imageGenreReleaseID": 123,
  "originMediaID": 123,
  "treatedMediaID": 123
}
'

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