List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-description&page=5291
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "ended": "2026-03-24T22:42:07.464602Z",
            "start_waiting": "2026-01-10T01:53:00.766121Z",
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}