Author of the content.
Describes a link preview.
URL to display.
Optional has_True, if size of media in the preview can be changed.
Version of instant view (currently, can be 1 or 2) for the web page; 0 if none.
Optional show_True, if the link preview must be shown above message text; otherwise, the link preview must be shown below the message text.
Optional show_True, if large media preview must be shown; otherwise, the media preview must be shown small and only the first frame must be shown for videos.
Optional show_True, if media must be shown above link preview description; otherwise, the media must be shown below the description.
Short name of the site (e.g., Google Docs, App Store).
Optional skip_True, if there is no need to show an ordinary open URL confirmation, when opening the URL from the preview, because the URL is shown in the message text in clear.
Title of the content.
Type of the link preview.
Original URL of the link.
Describes a link preview.