Ku qor sii wadida cutubkan - Sanadkii 2019, Manumua wuxuu u tartamay Tonga tartanka Oceania Weightlifting Championships ee dumarka +87 kg. Waxay gashay kaalinta shanaad ee qaadista, iyadoo kor u qaadaysa 80 kg. Manumua ayaa sidoo kale ka qeyb qaatay tartanka Cayaaraha Adduunka ee 2019
, oo matalaysa Tonga ee dumarka +87 kg group. Waxay kor u qaadday 96 kg oo la soo qabtay iyo 115 kg oo nadiif ah & jerk, oo gashay kaalinta 19-aad.