GET /topic/%23%ED%8A%B8%EC%9C%84%ED%84%B0%EA%B0%80_%ED%84%B0%EC%A7%84_%EB%8F%99%EC%95%88_%ED%96%88%EB%8D%98%EA%B2%83%EC%9D%84_%EC%98%AC%EB%A0%A4%EB%B3%B4%EC%9E%90