List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-board_size&page=33
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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    "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=-board_size&page=32",
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                "username": "AYAMI.S",
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            "description": "キラキラリーグ内の【有段者向け】リーグ戦です。 持ち時間は14日間。 2021年8月12日のリーグ開始時に参加されているメンバーでの総あたり戦になります。(レーティングによる自動ハンデ付き)\n\n全部のゲームが一斉に始まりますので、自分の手番になっている対局はどんどん着手していきましょう。",
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            "name": "ddcddrfrf",
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                "name": "New Zealand Tournaments",
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            "id": 79386,
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        {
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