Create Microsoft Graph Api Subscription for accept/reject meeting event by attendees

In my project, I have created Rest API project to create subscription and to listen notification from Microsoft Graph API. I want subscription for following things:

1. When I create meeting room event then I want to get notification if any attendees accept/reject that meeting room event.
2. If whole meeting event is cancelled or moves to another time slot or added any new attendees.

I was expecting all above gets covered by following code but it is not :

                var subscription = new Subscription
                {
                    ChangeType = "updated,deleted",
                    NotificationUrl = $"{_notificationHost}/listen",
                    Resource = "me/events",
                    ClientState = Guid.NewGuid().ToString(),
                    IncludeResourceData = false,
                    // Subscription only lasts for one hour
                    ExpirationDateTime = DateTimeOffset.UtcNow.AddHours(1)
                };

It does not send notification when accept or reject done by attendee with 'Do not send a response'. How I can get notification for this?

I managed both scenarios :

1. I am getting notification for attendees's reject/approve response on my listen api : NotificationUrl = $"{_notificationHost}/listen",

2. If new attendess added/removed or meeting time change or meeting cancelled then also we can get notification in Listen api.