を[機「き」]に => Use A as an opportunity N1
Time, Situation
[受「う」]け[身「み」] => Passive, be V-ed. N4
Causative, Passive, Volitional
[使「し」][役「えき」][受「う」]け[身「み」] => Imperative N4
Causative, Passive, Volitional
を[契機「けいき」] => As a good opportunity A, (do) B N2
Information, Report