Update the list of subscribed events. Possible values are project.imported, project.exported, project.deleted, project.snapshot, project.languages.added, project.language.removed , project.language.settings_changed, project.key.added, project.key.modified, project.keys.deleted, project.key.comment.added, project.translation.updated, project.translation.proofread, project.contributor.added, project.contributor.deleted, project.task.created, project.task.closed, project.task.deleted, project.task.language.closed, project.branch.added, project.branch.deleted, project.branch.merged, team.order.created, team.order.completed, team.order.deleted.