How to create/access MediaSpace channel playlist with API

Hi Jess,
my end goal is to create Mediaspace channel playlist with API. If I understand it correctly I need to create category and playlist. To glue it together I need to create metadata for this category with field named “channelPlaylistsIds”. Now to create metadata I need metadataProfile, my question is how do I find this metadataProfile knowing only its field name “channelPlaylistsIds”? Not sure if I just made it more confusing. Thanks for your patience.
Z.