GET /topic/%23%ED%8A%B8%EC%B9%9C%EC%86%8C_%ED%96%88%EB%8A%94%EB%8D%B0_%ED%8A%B8%EC%B9%9C%EC%9D%B4_%EC%A2%80_%EC%83%9D%EA%B2%BC%EC%9C%BC%EB%A9%B4_%EC%A2%8B%EA%B2%A0%EB%8B%A4%EB%8A%94_%EC%9E%91%EC%9D%80%EC%86%8C%EB%A7%9D%EC%9D%84%EA%B0%80%EC%A7%80