patch
https://api.sintalk.com.br/v3/contact-lists/
Renames the list and, on a blacklist list, replaces the channels it suppresses on. type is fixed at creation and cannot be patched. Omitting channels leaves them as they are; [] clears them, which stops the list suppressing anything. Setting a non-empty channels on a default list is rejected with 422, and taking a name another list already holds with 409. Which contacts are in the list is changed through the membership endpoints, not here.
Sintalk is provisioned for you and cannot be renamed; renaming it is rejected with 409. Its channels can still be changed.