curl --request GET \
  --url https://api.keebai.com/v1/messages/bulk/{broadcastId} \
  --header 'Authorization: Bearer <token>'

{
  "broadcast_id": "<string>",
  "status": "<string>",
  "total_recipients": 123,
  "sent": 123,
  "failed": 123,
  "pending": 123,
  "started_at": "<string>",
  "completed_at": "<string>"
}