curl --request GET \
  --url https://controller.platform.simplecloud.app/v0/players/online \
  --header 'X-Network-ID: <x-network-id>' \
  --header 'X-Network-Secret: <x-network-secret>'

{
  "count": 100,
  "players": [
    {
      "connected_proxy_name": "proxy-1",
      "connected_server_name": "lobby-1",
      "display_name": "Steve",
      "first_seen": "2023-01-01T12:00:00Z",
      "id": "069a79f4-44e9-4726-a5be-fca90e38aaf5",
      "last_seen": "2023-06-15T18:30:00Z",
      "name": "Steve",
      "online": true,
      "online_time_seconds": 36000,
      "playtime_seconds": 36000,
      "properties": {},
      "session_id": "sess_abc123"
    }
  ]
}