Repeat Track Spotify?

Hey guys,

Trying to set up some specific white noise to play though Spotify. But cant get it to repeat.

Tried both media_player and spotcast though Node Red

Spotcast works, but wont repeat

{"spotify_device_id":"xxxxxxxxxxxxxxxxxxx","repeat":"true","force_playback": "true","uri":"spotify:track:1KYHsn2EiJgVLZ1nw4h5JU"}

media_player just gives me an api error

{"source":"bedroom","repeat":"on","media_content_id":"https://open.spotify.com/track/1KYHsn2EiJgVLZ1nw4h5JU?si=258bae73057742b0"}

Any ideas, how are other people doing it?

Thanks