Yes!

1. Clicking on the heart icon next to a playlist will add all of the tracks from the playlist to your My Favorites section (you will see the heart icon next to each individual track change from a white outline to solid white). Do this for the playlists in the order you want to enqueue.

2. Then go to My Favorites on the left-margin menu, here you can see each of the soundscapes you have favorited as well as the individual tracks.