Get a specific user

        :type user: str
        :param user: User Email

        :rtype: dict
        :return: a dictionary containing user information

def show_user(self, user):
        """
        Get a specific user

        :type user: str
        :param user: User Email

        :rtype: dict
        :return: a dictionary containing user information
        """
        res = self.post('loadUsers', {'userId': user})
        if isinstance(res, list) and len(res) > 0:
            res = res[0]
        return _fix_user(res)