List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=max_ranking&page=5696
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "description": "ขอให้ชนะ",
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            "description": "Tournaments are held every Saturday\n\nJoin the OST community (^-^)",
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            "description": "参加者(敬称略)\nt6l_8、aiai0008、景千代、hoshimiya26、hataru",
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