How to add a track to a playlist?

[hannah194]

Plan: Premium

Country:US

Device: command line

Operating System: n/a

My Question or Issue:

I added a track to a playlist with this httpie command:

http POST https://api.spotify.com/v1/playlists/${playlist_id}/tracks uris==spotify:track:43iBTEWECK7hSnE0p6GgNo Authorization:"$authorization"

The response is a 201 Created.

The response body is

{
  "snapshot_id": "MTI5LGUzY...TkzODM="
}

The track is not really added to the playlist.

What can I do with the snapshot_id?