pl 

bulletin (TActivityContentDetails)

pl 

channelItem (TActivityContentDetails)

pl 

comment (TActivityContentDetails)

pl 

favorite (TActivityContentDetails)

pl 

like (TActivityContentDetails)

pl 

playlistItem (TActivityContentDetails)

pl 

promotedItem (TActivityContentDetails)

pl 

recommendation (TActivityContentDetails)

pl 

social (TActivityContentDetails)

pl 

subscription (TActivityContentDetails)

pl 

upload (TActivityContentDetails)