{"pair":"btc/usd","currency":"BTC","atm_iv":41.8,"skew":8.9,"ts_ratio":0.9932,"spot":60703.91,"preview":true,"signed":false,"note":"Preview — ATM IV, skew, term structure only, unsigned Data cached — may be up to 60 minutes old.","preview_cached":true,"cache_max_age_minutes":60}