-----  GetRankingByGameEvent. -----
UID := r.FormValue("uid")
	eventType := r.FormValue("eventType")
	gameMode := r.FormValue("gameMode")
	exchangeRate := r.FormValue("exchangeRate")
	serverRequest := r.FormValue("isServerRequest")

eventType = enum
gameMode = enum
exchangeRate = 250
serverRequest = 1 or 0

-------------------------------------

 --- - - - GetWorldRankingByGameEvent ------ // Hall of fame

	UID := r.FormValue("uid")
	eventType := r.FormValue("eventType")
	serverRequest := r.FormValue("isServerRequest")