Get a campaign

curl --request GET \
  --url https://api.givebutter.com/v1/campaigns/{campaign} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "code": "<string>",
  "account_id": "<string>",
  "event_id": "<string>",
  "type": "<string>",
  "title": "<string>",
  "subtitle": "<string>",
  "description": "<string>",
  "slug": "<string>",
  "url": "<string>",
  "goal": 123,
  "raised": 123,
  "donors": 123,
  "currency": "<string>",
  "cover": "<string>",
  "status": "<string>",
  "timezone": "<string>",
  "end_at": "<string>",
  "settings": [
    {
      "name": "<string>",
      "value": "<string>"
    }
  ],
  "created_at": "<string>",
  "updated_at": "<string>",
  "event": {
    "title": "<string>",
    "type": "<string>",
    "location_name": "<string>",
    "address_formatted": "<string>",
    "google_place_id": "<string>",
    "start_at": "<string>",
    "end_at": "<string>",
    "timezone": "<string>",
    "details": "<string>",
    "private": "<string>",
    "tickets_required": "<string>",
    "livestream": "<string>",
    "livestream_start_at": "<string>",
    "livestream_end_at": "<string>",
    "created_at": "<string>",
    "updated_at": "<string>"
  }
}