If you want to import your podcast subscriptions from Spotify, you can do the following steps:
Open Spotify and go to: Your Library > Select "Podcasts" pill > Enable list view (list icon on top right)
Click on the share icon of the show in the Spotify app
Choose "More" to open the native share sheet on your phone
Select Snipd app to share the link with Snipd
Click "Subscribe" on the show page in Snipd