How to create/access MediaSpace channel playlist with API

Hello All,
I am trying to create MediaSpace channel playlists and set its entitlements with Kaltura API. I manually created new Mediaspace channel and playlist under it. I can see it automatically created new category with the channel name and new playlist in KMC and they are connected with unknown property channelPlaylistsIds inside the category metadata. I believe I can now set entitlements on this category and it controls access to channel playlist and its media. My question is which API to use to create such channel and channel playlist? I was out of luck searching API docs.
Thanks for any ideas,
Zbynek