curl --request POST \
  --url http://localhost:8000/v1/console/case-studies/{case_study_id}/documents/attach \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "document_ids": [
    "<string>"
  ]
}
'

{
  "data": {
    "created_at": "2023-11-07T05:31:56Z",
    "id": "<string>",
    "is_active": true,
    "slug": "<string>",
    "title": "<string>",
    "avatar": {
      "id": "<string>",
      "is_active": true,
      "name": "<string>",
      "bio": "<string>",
      "image_url": "<string>",
      "role": "<string>",
      "tags": [
        "<string>"
      ]
    },
    "avatar_id": "<string>",
    "description": "<string>",
    "document_count": 0,
    "document_ids": [
      "<string>"
    ],
    "document_url": "<string>",
    "first_message": "<string>",
    "instructions": [
      "<string>"
    ],
    "llm_model": "<string>",
    "media_url": "<string>",
    "programme_codes": [
      "<string>"
    ],
    "stt_language": "<string>",
    "system_prompt": "<string>",
    "time_limit_minutes": 123,
    "tts_voice": "<string>",
    "updated_at": "2023-11-07T05:31:56Z"
  },
  "message": "<string>",
  "success": true
}