Roc Nation is an American entertainment company founded by Jay-Z in 2008. Headquartered in New York City, the company is a successor to his previous Roc-A-Fella Records label, with additional offices in Los Angeles and London. From Wikipedia
Minaj’s posts target Jay-Z over alleged Tidal debts, accuse Democrats of vaccine-related attacks, rail against President Trump’s pardon of Roc Nation’s CEO