1. A database system implemented using a server system, the database system configurable to cause: designating a first user as a proxy user of a second user in a social networking system with respect to with respect to an entity in the social networking system, the proxy user having an authorization to publish feed content attributed to the second user to feeds associated with the entity; processing feed content received from a device associated with the proxy user, the feed content to be published in one or more feeds associated with the entity; associating the feed content with the second user; generating data indicating the association of the feed content with the second user; and providing the generated data to a display device configured to display a presentation of the one or more feeds in a user interface, the presentation including the feed content and an indication of the association of the feed content with the second user.