{"index":"MSTI","preview":true,"note":"Last 3 rows only. Paid endpoint returns up to 56 days with per-row signatures.","data":[{"computedAt":1781203479,"value":38.5,"regime":"COUPLED","confidence":1.0,"datetime":"2026-06-11T18:44:39+00:00"},{"computedAt":1781203479,"value":38.5,"regime":"COUPLED","confidence":1.0,"datetime":"2026-06-11T18:44:39+00:00"},{"computedAt":1781203489,"value":38.5,"regime":"COUPLED","confidence":1.0,"datetime":"2026-06-11T18:44:49+00:00"}],"fetched_at":"2026-06-11T18:45:10.874627+00:00"}