const oppIdx = (gameInfo.players[0].id == req.userId ? 1 : 0);
const oppId = gameInfo.players[oppIdx].id;
UserModel.tryNotify(oppId,
const oppIdx = (gameInfo.players[0].id == req.userId ? 1 : 0);
const oppId = gameInfo.players[oppIdx].id;
UserModel.tryNotify(oppId,