code: def create_user(self, email, first_name, last_name, password, role="user", metadata={}):
          
          data = {
              'firstName': first_name,
              'lastName': last_name,
              'email': email,
              'metadata': metadata,
              'role': role.upper() if role else role,
              'newPassword': password,
          }
          response = self.post('createUser', data)
          return self._handle_empty(email, response)
docs: Create a new user
  
          :type email: str
          :param email: User's email
  
          :type first_name: str
          :param first_name: User's first name
  
          :type last_name: str
          :param last_name: User's last name
  
          :type password: str
          :param password: User's password
  
          :type role: str
          :param role: User's default role, one of "admin" or "user"
  
          :type metadata: dict
          :param metadata: User metadata
  
          :rtype: dict
          :return: an empty dictionary