One of Nigeria’s GSM network providers, Etisalat, has signed prolific actress, Genevieve Nnaji as its brand ambassador. The telecoms company announced the deal with the star actress on a popular micro-blogging website, Twitter, on Wednesday night. “We officially welcome Genevieve Nnaji as an Etisalat Ambassador for EasyFlex. We do quality not quantity. Flex 4000, Flex…