For a Restaurant manager it largely depends on you educational qualification but the lowest considering the fact that Nigeria have one of the lowest low salary payment rate in the lowest and highest a restaurant manager can get is between 200 to 600 dollars per month (high),80,000 to 100,000Naira in Nigeria money, lowest will be beween 45,000 to 70,000 Naira Nigeria money equivalent to 100 to 150 dollars per month. Vacancies you can check on Jobsora
https://ng.jobsora.com/jobs-lagos-state