'Loads user data from service'

def user_data(self, access_token, *args, **kwargs):

    headers = {'Authorization': ('Bearer    %s' % access_token)}
    try:
        resp = requests.get(ASANA_USER_DETAILS_URL, headers=headers)
        resp.raise_for_status()
        return resp.json()['data']
    except ValueError:
        return None
