List all tournaments or create a new tournament.

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HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "For those who enjoy playing Go on a friday night!\n\n**Since the total number of participants in the tournament is not (8/16/32), the previous format(double elimination) will cause some problems. So, it is more practical to switch to single elimination.\n\nEverybody will still be playing 2 games. For those who have lost the first round, you can find another opponent using the chat in the tournament channel.",
            "schedule": null,
            "title": null,
            "tournament_type": "elimination",
            "handicap": 0,
            "rules": "chinese",
            "time_per_move": 30,
            "time_control_parameters": {
                "system": "absolute",
                "time_control": "absolute",
                "speed": "live",
                "pause_on_weekends": false,
                "total_time": 2700
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 4597,
                "name": "NTU Weiqi",
                "summary": "",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 37,
                "icon": "https://user-uploads.online-go.com/35cd4a5df990f4963212563cefcde97b-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2020-04-03T11:30:00Z",
            "players_start": 4,
            "first_pairing_method": "random",
            "subsequent_pairing_method": "random",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": false,
            "exclusivity": "invite",
            "started": "2020-04-03T11:30:50.079789Z",
            "ended": "2020-04-03T15:49:18.425445Z",
            "start_waiting": "2020-04-03T11:30:48.506492Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/35cd4a5df990f4963212563cefcde97b-15.png",
            "player_count": 12,
            "ranked": true
        }
    ]
}