How to reply with 200 from Nginx, without serving a file?

I have configured Apache to send back a 200 response without serving any file with this configuration line Redirect 200 /hello Can I do this with Nginx? I don't want to serve a file, I just want the server to respond with a 200 (I'm just logging the request). I know I can add an index file and achieve the same thing, but doing it in the config means there's one less thing that can go wrong.

[yamadar]

自分も return 200 だけ書いたら同じことになったのでコンテントタイプ指定した

[ZuiUrs]

“add_header Content-Type text/plain;”

[cknbstr]

nginxで直接レスポンスボディを設定“location / { return 200 'gangnam style!' ...”