curl -X POST "https://app.talkover.ai/api/v1/campaigns/campaign-uuid/webhooks" \
  -H "Authorization: Bearer talq_your_environment_token_here" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Lifecycle Webhook",
    "webhook_url": "https://example.com/campaign-events",
    "events": ["campaign.started", "campaign.completed", "campaign_call.completed"],
    "include_call_events": false
  }'

{
  "success": true,
  "data": {
    "id": "webhook-uuid-1",
    "campaign_id": "campaign-uuid",
    "name": "Lifecycle Webhook",
    "events": ["campaign.started", "campaign.completed", "campaign_call.completed"],
    "enabled": true,
    "include_call_events": false,
    "created_at": "2024-01-15T15:00:00Z"
  }
}