curl --request DELETE \
  --url http://localhost:8000/api/v1/campaigns/drafts/{draft_id}/ad-groups/{ad_group_id} \
  --header 'Authorization: Bearer <token>'

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}