How do you create a subscriber using the Notification Center for React
I am using the NovuProvider, however I can't seem to find the process for updating the subscriber properties i.e. email, number or any other metadata
<NovuProvider
backendUrl={novuBackendUrl}
socketUrl={novuSocketUrl}
subscriberId={currentShop._id}
applicationIdentifier={novuAppId}
>
<PopoverNotificationCenter onNotificationClick={onNotificationClick}>
{({ unseenCount }) => <NotificationBell unseenCount={unseenCount} />}
</PopoverNotificationCenter>
</NovuProvider>
<NovuProvider
backendUrl={novuBackendUrl}
socketUrl={novuSocketUrl}
subscriberId={currentShop._id}
applicationIdentifier={novuAppId}
>
<PopoverNotificationCenter onNotificationClick={onNotificationClick}>
{({ unseenCount }) => <NotificationBell unseenCount={unseenCount} />}
</PopoverNotificationCenter>
</NovuProvider>
