{"plays":[{"participant_id":"5388019cdc4a9fe96201848d1e87f1d353ae2e753ebfd3957b5ba88fd632255d6af2fbb4e7d6f47ed4c7250baa53a21643e55cc2024a9aed08fed7f99bfa3eba","user_hash":"a7ccf6497605dbbeb4f0dfefcdc1399c","first_name":"A","last_name":"M","track_slug":"ebpf-tutorial","status":"started","challenges_completed":0,"challenges_total":9,"start_time":"2026-11-01T21:35:33Z","end_time":"1970-01-01T00:00:00Z"},{"participant_id":"85b7b9e9c42491a9a5eeff722110f26977217aa3f87c299cf145d4159e244a70c134930014ee8ed65391174d0b79d3566122509c587565a47b8744d45970e9cf","user_hash":"321f6de9740b473c569fe886b79e7471","first_name":"H","last_name":"V","track_slug":"cilium-bgp","status":"started","challenges_completed":5,"challenges_total":6,"start_time":"2026-11-01T20:10:47Z","end_time":"1970-01-01T00:00:00Z"}]}