Fix response structure error and router error

Signed-off-by: Asai Neko <sugar@sne.moe>

service/event/handler.go

@@ -11,5 +11,5 @@ func Handler(r *gin.RouterGroup) {
 	r.GET("/info", Info)
 	r.GET("/checkin", Checkin)
 	r.GET("/checkin/query", CheckinQuery)
-	r.POST("/checkin/submit", CheckinSubmit, middleware.Permission(20))
+	r.POST("/checkin/submit", middleware.Permission(20), CheckinSubmit)
 }