@staticmethod
def user_parse(data):
    """Parse information from provider."""
    resp = data.get('response', [{}])[0]
    yield 'id', resp.get('id')
    yield 'first_name', resp.get('first_name')
    yield 'last_name', resp.get('last_name')
    yield 'username', resp.get('nickname')
    yield 'city', resp.get('city')
    yield 'country', resp.get('country')
    yield 'picture', resp.get('photo_big')
