Dynamic bloc appearing for x days as per the subscription

Hello,

We want a dynamic bloc in our html template and want this to appear only for 30 days starting the subscription.
We've got subscribers that are subscribed to our magazine only for 30 days, and we want to have the dynamic bloc only for this period.

Can we use a a visibility condition for this?
https://experienceleague.adobe.com/docs/campaign-standard/using/designing-content/personalization.html?lang=en#conditional-content
Would DaysAgo/ DaysDiff work for this scenario?

Can you help with an example of what can we use to achieve this?

Thank you!