GET /topic/%2523%25E3%2583%2595%25E3%2582%25A9%25E3%2583%25AD%25E3%2583%25AF%25E3%2583%25BC%25E3%2581%258C%25E4%25BD%2593%25E9%25A8%2593%25E3%2581%2597%25E3%2581%259F%25E4%25BA%258B%25E3%2581%258C%25E7%2584%25A1%25E3%2581%2595%25E3%2581%259D%25E3%2581%2586%25E3%2581%25AA%25E4%25BD%2593%25E9%25A8%2593