Spotify api play random song from user saved tracks

[Malnen]

I want to play a random song from user saved songs using Spotify Web API. I test it here https://developer.spotify.com/console/put-play/ Putting this into request body { "context_uri": "spotify:user:malnen132:collection", "offset": { "position": 5 }, "position_ms": 0 } returns this error { "error": { "status": 400, "message": "Can't have offset for context type: COLLECTION" } } Is there any way I can play song with offset in saved tracks context