Receiving too many notifications

You are receiving updates of all people/orgs/groups you are following. If you unfollow all of them then you will receive notifications related to your profile only, or you can leave only profiles you really want to receive notifications from.

You can unfollow on this page:
Account > Dash > find the "following" link under your profile thumbnail:

or go to this direct link:
https://una.io/page/persons-profile-subscriptions?profile_id=4#subscriptions

Then click delete (x) near every profile you want to unfollow in "Following" block.

Please note, if you befriend someone, then you are automatically follow their profile activity.