Get campaign progress

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

{
  "data": {
    "completion_rate": 123,
    "failed": 123,
    "pending": 123,
    "processed": 123,
    "sent": 123,
    "skipped": 123,
    "total": 123
  }
}