Currently Brazil does not have a designated data protection authority, however the National Telecommunications Agency and the National Consumer Protection Secretary maintain certain enforcement duties.

National Telecommunications Agency Address: Website: www.anatel.gov.br/institucional/ 

National Consumer Protection Secretary: Website: www.justica.gov.br/seus-direitos/consumidor

Law Information: 

House of Deputies Bill 5276/2016 (draft) (in Portuguese)
Marco Civil da Internet