curl --request PUT \
  --url https://api.example.com/api/datasets/{dataset_id}/shortcut-guidance/classes/{class_name} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "exemplar_path": "<string>",
  "mask_png_base64": "<string>",
  "bbox": {},
  "strokes": "<unknown>"
}
'

{
  "id": "<string>",
  "class_name": "<string>",
  "exemplar_path": "<string>",
  "mask_url": "<string>",
  "bbox": {},
  "strokes": "<unknown>",
  "created_at": "<string>",
  "updated_at": "<string>",
  "updated_by": "<string>"
}