What was the largest rap concert?

The largest rap concert to date was held at the FNB Stadium in Johannesburg, South Africa on December 10th, 2018, and was headlined by American rapper Jay-Z. It was part of the Global Citizen Festival: Mandela 100, a celebration of former South African President Nelson Mandela's 100th birth anniversary. The concert attracted over 85,000 people, making it the largest rap concert in history.