brazilian national rodrigo gularte , 42 , was a paranoid schizophrenic .
he did not understand he was being executed until his final moments .
gularte was shot by a firing squad alongside australians andrew chan and myuran sukumaran and five other death row inmates .
gularte spent seven of his 11 years in prison on nusakambangan .
he was arrested in 2004 for attempting to smuggle six kilograms of cocaine into indonesia hidden inside a surfboard .