Links for the VK (VKontake, Russian social network) should be supported either with artist or release relationships (where XX is either .com or .ru):

Artist: https://vk.XX/USERNAME or https://vk.XX/idYYYYYYYYYY for artist's social page(s) and https://vk.XX/artist/ARTISTNAME for artist's music page
Release: https://vk.XX/music/album/RELEASE_ID (in rare occasions it also might look like: https://vk.XX/audiosUSER_ID?z=audio_playlist-RELEASE_ID)
Video: https://vk.XX/video-VIDEO_ID