By Marcela Ayres BRASILIA, March 31 (Reuters) - Social media platform TikTok, controlled by China's ByteDance, is seeking approval from the Brazilian central bank to operate as ‌a lending and payments fintech, according to two people with direct knowledge ‌of the matter. The sources, who requested anonymity because the plans are confidential, said TikTok has applied for two ​licenses with the regulator. One would allow it to operate as an "electronic money issuer," offering prepaid accounts for users to ...