// 1. Create a single game session when needed
app.post("/my-webhook/game-session", (req, res) => {
  const { gameSettings, competitors } = req.body.data;
  const gameSessionId = GameService.CreateGameSession(gameSettings, competitors);

  res.json({
    state: "CREATED",
    gameTag: { gameSessionId }
  });
});

// 2. Upload results for game session
fetch("~/game_sessions/{game-session-id}", {
  method: "POST",
  headers: { "Content-Type": "application/json", "Authorization": "Bearer ****" },
  body: JSON.stringify({
    state: "FINISHED",
    gameTag: { gameSessionId: "{ game-session-id }" },
    result: { competitorResults: [
        { gameAccountReference: { accountId: "{ player1-id }", }, result: { score: 56, ... } },
        { gameAccountReference: { accountId: "{ player2-id }" }, result: { score: 23, ... } }
      ]
    }
  })
});