Dee ihe na-aga n'ihu maka paragraf a - N'afọ 2019, Manumua so Tonga n'asọmpi Oceania Weightlifting Championship n'asọmpi ụmụnwaanyị +87 kg. Ọ nọrọ n'ọnọdụ ise na snatch, na-ebuli kilogram 80. Manumua sonyekwara n'asọmpi iko mba ụwa nke 2019
, na-anọchite anya Tonga na ụmụ nwanyị + 87 n'arọ. O buliri kilogram 96 na snatch na kilogram 115 na ọcha & jerk, na-etinye 19.