캠페인 목록 조회

curl --request POST \
  --url https://client-api.tryvox.co/v2/campaigns/list \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "filter_criteria": {
    "status": [
      "<string>"
    ],
    "agent_id": [
      "<string>"
    ],
    "start_timestamp": {
      "upper_threshold": 123,
      "lower_threshold": 123
    }
  },
  "sort_order": "descending",
  "limit": 50,
  "pagination_key": "<string>"
}
'

{
  "campaigns": [],
  "next_cursor": "456",
  "total_count": 25
}