Pass custom attribute when starting meeting

Feature Requests
1

This is for developer-specific feature requests. For other requests please contact our customer support team.

Is your feature request related to a problem? Please describe.
Yeah, currently we cannot track user when starting meeting using websdk.
Like for example we need to track which user participated on meeting, etc with our database record.
I know, we can pass email but it is not received on websdk. Custom attribute is more appealing than just an email.

Describe the solution you’d like
If we can pass custom attribute and received that data on webhooks, that will be very helpful on many cases not just websdk.

Describe alternatives you’ve considered
Support user id or return email passed on webhooks.

Additional context

const meetConfig = {
	apiKey: '3239845720934223459'
	meetingNumber: '123456789',
	leaveUrl: 'https://yoursite.com/meetingEnd',
	userName: 'Firstname Lastname',
	passWord: 'password',
	role: 1 // 1 for host,
    customAttr: {
        "internal_id": 123,
        "participant_id": 567
    }
};