1. A method for providing a social content product comprising user interactions on external systems, the method comprising: storing at a social networking system a plurality of graph objects interconnected by graph actions, the graph actions having graph action types defined by entities external to the social networking system, where a graph action represents a relationship between two or more graph objects and the graph action type defines the relationship between the two or more graph objects; receiving user interactions on one or more external systems, the user interactions including graph actions performed on graph objects by users of the social networking system; providing a social content product interface to a viewing user, the social content product interface including selectable links associated with the received user interactions on the external systems, the social content product interface associated with a user profile object on the social networking system and provided for display to users of the social networking system; receiving a selection of a link of the selectable links from a viewing user to perform a graph action on a graph object on an external system associated with a particular user interaction of the received user interactions, the particular user interaction associated with a particular user; sending a request to the external system for the viewing user to perform the graph action on the graph object associated with the particular user interaction, the request including an instruction to the external system to execute user input associated with the graph action on a user device associated with the viewing user; and responsive to the request, receiving an indication from the external system that the user device associated with the viewing user executed the user input associated with the graph action performed on the graph object associated with the particular user interaction.