Kammala jumla mai zuwa: A cikin 2019, Manumua ya yi gasa don Tonga a Gasar Cin Kofin Oceania a cikin rukunin mata + 87 kg. Ta sanya na biyar a cikin kamawa, ta ɗaga kilogiram 80. Manumua ya kuma shiga cikin
2019 Gasar Cin Kofin Duniya, wakiltar Tonga a rukunin mata + 87 kg. Ta ɗaga kilo 96 a cikin ƙwace da kilo 115 a cikin tsabta & jerk, sanya 19th.