List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=exclusivity&page=146
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "description": "Zweites wöchentliches Blitzturnier. Passt bitte auf nicht wegen der Zeit zu verlieren.",
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                "summary": "inofficial and private group for (former) staff and students of our school - people unaffiliated with our school cannot join",
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