(Mixed) The user ID or user email of the user you want to assign lists to.
(Array) The list slugs you want to add to the user. You only have to choose existing lists. This argument expects a JSON formatted string with the list slugs as a value.
(String) Register a custom WordPress hook callback. The value will be called as followed: do_action( $yourdefinedaction, $action_return_data, $request_data )
More available Autonami endpoints
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