curl --request PUT \
  --url http://localhost:8000/api/v1/campaigns/drafts/{draft_id}/ad-groups/{ad_group_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "cpc_bid_micros": 123
}
'

{
  "id": 123,
  "name": "<string>",
  "cpc_bid_micros": 25000000000,
  "keywords": [
    {
      "id": 123,
      "text": "<string>",
      "cpc_bid_micros": 25000000000,
      "final_url": "<string>",
      "source_market_analysis_keyword_id": 123
    }
  ],
  "rsas": [
    {
      "id": 123,
      "ad_group_id": 123,
      "headlines": [
        {
          "text": "<string>",
          "reason": "<string>"
        }
      ],
      "descriptions": [
        {
          "text": "<string>",
          "reason": "<string>"
        }
      ],
      "final_url": "<string>",
      "final_mobile_url": "<string>",
      "display_path_1": "<string>",
      "display_path_2": "<string>",
      "tracking_url_template": "<string>",
      "generation_status": "pending",
      "generation_task_id": "<string>",
      "generation_error": "<string>"
    }
  ]
}