Complex sentence: Performa was to collect the rent and keep a percentage for a managing fee per tenant then turn the rest of the monies over to the Beale Stree Corporation and then the Corporation would then in turn pay a percentage of those fees to the City of Memphis.
Split into simpler sentences: Performa was to collect the rent and keep a percentage for a managing fee per tenant, then turn the rest of the monies over to the BSDC. The Corporation would then, in turn, pay a percentage of those fees to the City of Memphis.