An object representing a single post in a feed 
Name Type Description
latestReplies replyFeedItem[] Last two replies in this post
pinned boolean A flag indicating whether this message is pinned\highlighted
message entity The discussion message entity
likedByMe boolean Boolean flag which indicates whether the current user likes this message
relatedEntities entity[] related items mentioned in this message
notify entity[] users or groups notified in this message
topics entity[] topics in this message
bodyMarkup string
summary string