Probably not unless the Samsung Smart TV has an internet web browsing interface to access MyCloud.com web portal.
If the Samsung Smart TV supports the Plex App (see this link for supported Plex app Smart TV models) it may be possible to use Plex to remote access a Plex Server that would then pull media from a My Cloud (or if one has an official Plex supported My Cloud model other than the single bay My Cloud’s).
Or as others suggest there is Kodi or other similar devices (including Roku loaded with the Plex app) that may be able to remote stream content from a My Cloud (or Plex server via Plex app/channel).
Generally the DNLA protocol used by many Smart TV’s DLNA clients do not support streaming over the internet.
