Unsubscribe from report

Hello,

Someone from my organization have subscribed me in a report daily subscription. I'm a Admin of the report's workspace, and even so I can't unsubscribe myself. I think the person didn't subscribe myself, but an e-mail group which I'm in.

On the e-mail I recive, there is no Unsubscribe option.

It would be nice if someone could present a solution that doesn't involve contacting the user who subscribed me, or use an admin only feature, since my concern is all the users that are in this situation through the organization.

Thanks!