a method to retrieve the account details of a user in the bucket
            
        :param uid: string with id of user in bucket 
        :return: dictionary with account fields for user

def load_user(self, uid):
    
        '''
            a method to retrieve the account details of a user in the bucket
            
        :param uid: string with id of user in bucket 
        :return: dictionary with account fields for user
        '''
    
        title = '%s.load_user' % self.__class__.__name__
        
    # validate inputs
        input_fields = {
            'uid': uid
        }
        for key, value in input_fields.items():
            if value:
                object_title = '%s(%s=%s)' % (title, key, str(value))
                self.fields.validate(value, '.%s' % key, object_title)
    
    # construct url
        url = self.bucket_url + '/_user/%s' % uid
        
    # send request and unwrap response
        response = requests.get(url)
        response = response.json()
    
        return response