I get an error when trying to scrobble to listenbrainz using api_compat. As far as I can see, this is because record_listens does not account for field api_sig in the request data, leading to an "empty" track being added, which leads to it breaking later. If I remove api_sig from the request, it works as expected.

api_sig is a signature required in each track.scrobble request. 

Steps to reproduce:

Try to run this code after adding getting tokens and session_key from listenbrainz

https://gist.github.com/paramsingh/a4764b16afd290f577e00bade51ef5ab