I am trying to draft an email response and I am trying to actually reply to the thread. I have followed answers on other SO questions but its still not working.

    draft_message = EmailMessage()
    draft_message.set_content(message)

    draft_message['In-Reply-To'] = <message_id>
    draft_message['References'] = <message_id>
    draft_message['Subject'] = subject


    encoded_message = base64.urlsafe_b64encode(draft_message.as_bytes()).decode()
    body = {"message": {'threadId': thread_id, "raw": encoded_message}}
    
    service
            .users()
            .drafts()
            .create(userId="me", body=create_message)
            .execute()
      

I have set the thread_id and set all the headers like I think should be done but its still not replying to the thread. What am I doing wrong?