What does Jonah 1:2 mean?

He told him, 'Get up and go to Nineveh, that huge city, and tell them what’s wrong with how they’re living, because their evil has gotten my attention.' Jonah 1:2 - Modern Text Bible

(God gives Jonah a clear mission: go to Nineveh and confront them about their wrongdoing, because their actions can’t be ignored anymore.)