Get a campaign

curl --request GET \
  --url https://your_a2_service/campaigns/{id} \
  --header 'Authorization: Bearer <token>'

{
  "audience_segments": {},
  "bid_strategy": "highest_volume",
  "budget": 0,
  "created_at": "2023-11-07T05:31:56Z",
  "crid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "daily_budget": 123,
  "description": "<string>",
  "end_date": "<string>",
  "goal": "click",
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "max_bid": 0,
  "min_daily_imp": 1000,
  "name": "<string>",
  "no": 123,
  "owner_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "start_date": "<string>",
  "status": "okay",
  "sub_goal": "<string>",
  "tagid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "target_cpa": 0,
  "target_cpm": 0,
  "target_volume": 0,
  "updated_at": "2023-11-07T05:31:56Z"
}