Yes, it is possible to create multiple subscriptions for a user resource to get change notifications using the Microsoft Graph API. Each subscription can have a different notification URL, but the resource and change type must be the same for a given tenant. To create a subscription, send a POST request to the /subscriptions
endpoint with the desired parameters, including the resource URL, change type, and notification URL. You can create up to 1000 active subscriptions for Outlook resources per mailbox for all applications.
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