In at least one example, the user interface 144 can include one or more user interface elements 156 associated with existing subscriptions, which can be referred to as “subscription user interface elements.” In some examples, such user interface element(s) 156 can include an indication of a third-party platform/application associated with the subscription and a name or title of an object with which the subscription is associated. In some examples, such user interface element(s) 156 can be associated with actuation mechanism(s) that when actuated can enable one or more operations via a subscription user interface. For instance, actuation of an actuation mechanism associated with the “Notes” object can cause a summary of notifications associated with the object to be presented via the user interface 144. Additional details are provided below. In some examples, actuation of an actuation mechanism associated with the “Notes” object can enable modification of the subscription associated therewith (e.g., frequency of notifications, type of notifications, etc.). In some examples, actuation of an actuation mechanism associated with the “Notes” object can enable termination of the subscription. Additional details are provided below.