{"ts":"2026-08-18T00:00:00Z","level":"info","service":"auth","msg":"User login succeeded","userId":42}
{"ts":"2026-08-18T00:00:01Z","level":"warn","service":"auth","msg":"Rate limit near threshold","userId":42,"usage":"91%"}
{"ts":"2026-08-18T00:00:03Z","level":"error","service":"payment","msg":"Charge declined","code":"card_declined","userId":7}
{"ts":"2026-08-18T00:00:05Z","level":"info","service":"api","msg":"GET /v2/users 200","durationMs":18}