After reading the docs on
https://docs.microsoft.com/en-us/azure/notification-hubs/notification-hubs-push-notification-registration-management and https://docs.microsoft.com/en-us/rest/api/notificationhubs/create-overwrite-installation
I am using the restful Api format for notification hub. I understand that I require installation id and push channels and user id to finish the push notification. But the explanation of these three fields does not seem very clear to me.
The frontend App will request Apple Push Notification System for a token. Then he will send the token to my backend Api. Then In order to fill in these three fields, should I put the token as the installation Id and put the user's email in database as the user Id? I have no idea where to fetch the content to fill in the push channel field.
Thank you very much!