Council of Europe
The Council of Europe is one of the most influential international organizations in the field of sport. Among the sports conventions it has issued is the Convention on the Manipulation of Sports Competitions (the Macolin Convention), which was signed in 2014. Within the framework of this Convention, each Party shall identify a national platform addressing manipulation of sports competitions, as referred to in Article 13 of the Convention.
United Nations (https://www.unodc.org/unodc/en/safeguardingsport/index.html)
United Nations are actively involved in sport corruption issues through the United Nations Office of Drug and Crime (UNODC). There are two relevant resolutions that concern sport corruption and refer to the manipulation of sport competitions and the importance of sports integrity.