{"plays":[{"participant_id":"9fe10ddd225f619c7cd2544d0871cabc091d282ad6c80dbe500b3c540a417fe16f2f6fa8568493fe1aec7668971b31cfde7c110f46034b32b4ebe02fc8cc2e2d","user_hash":"51ef893cf7a69907d87031430d57fcf4","first_name":"J","last_name":"M","track_slug":"ebpf-networking","status":"started","challenges_completed":1,"challenges_total":9,"start_time":"2026-11-02T11:11:49Z","end_time":"1970-01-01T00:00:00Z"},{"participant_id":"807dcf20c5239819c7ea232cc55808286ad43bdbb3a571d801bb6b0b1f7ae45fdcea8eb51d8d129686ef7cb5cd95102f9290bd6e9b3cb005ff406993b9ada84a","user_hash":"218dfe173b72647f24e4fc68153a73c2","first_name":"M","last_name":"S","track_slug":"discovery-platform-engineer","status":"started","challenges_completed":1,"challenges_total":3,"start_time":"2026-11-02T11:14:07Z","end_time":"1970-01-01T00:00:00Z"},{"participant_id":"b4d5ae1ec95a8cccdbfa6ec11668e844696c43dde4c1fd533bd3855a0aee8ecad7be9bb6724434cafdd5d617f5aeb5f63b5649627ffe1941bb178445e0e7d2b8","user_hash":"4f0b5d60d483a27873053eab18264981","first_name":"G","last_name":"S","track_slug":"cilium-getting-started","status":"started","challenges_completed":1,"challenges_total":7,"start_time":"2026-11-02T11:23:41Z","end_time":"1970-01-01T00:00:00Z"}]}