English translation: he will be asked to confirm his unsubscription to the service
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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
Spanish term or phrase:
de-suscrito (please read below)
he will be asked to confirm his unsubscription to the service
Explanation: They [I'd use plural to avoid "he"; you may not want to be so PC] will then be prompted to confirm this operation and notified that they will be desubscribed from the service they are deprovisioning.
As you have no doubt noticed, your original is out of whack. Al usuario se le **pide** confirmación, pero se le **da** notificación. The author neglected to change the verb.