{"plays":[{"participant_id":"7cc038f95d9e2aa11dbb30eed606af57da60b0fd63831e2dc32904937f9a40bd0755d796138eb8c2275f4792438573f992a16d29d4c67ea6a925332a09ad1ca2","user_hash":"bb4712b32ea7103f6b9de01efb9afdf2","first_name":"T","last_name":"B","track_slug":"discovery-platform-engineer","status":"started","challenges_completed":0,"challenges_total":3,"start_time":"2026-07-20T18:52:05Z","end_time":"1970-01-01T00:00:00Z"},{"participant_id":"504976d567b3ee05a46ae7819ab30e7cdbac6c16d77a5d0dd9a20fefef02a255f851d16cf0d0f1073d162f1b860e8c4978c417c285133049c5b697ed43a78d5c","user_hash":"2b075f4682dca03756b71cfb386e3e34","first_name":"B","last_name":"E","track_slug":"cilium-gitops","status":"started","challenges_completed":4,"challenges_total":13,"start_time":"2026-07-20T18:25:51Z","end_time":"1970-01-01T00:00:00Z"}]}