Nintendo

I have come into possession of a Nintendo Switch and I do not have the identity of the owner. Any suggestions how to track down the owner? I looked at the user accounts and they are not logged into and social media accounts, no name or other identifying details, no Nintendo Online account so I can't go online to chat with any of their saved friends. The best lead I have is a Reddit user who is using the same username as the Switch user, the Reddit user is a gamer but no Nintendo specific posts. I guess the logical next step would to be to DM the Reddit user but I deleted all my accounts and do not want to create a new account.