Rust contract upgrading a game player

Create a subaccount for this:

export NEAR_ACCT=YOUR_ACCOUNT_NAME.testnet 
near create-account player.$NEAR_ACCT --masterAccount $NEAR_ACCT

Or remake if need be:

near delete player.$NEAR_ACCT $NEAR_ACCT
near create-account player.$NEAR_ACCT --masterAccount $NEAR_ACCT

Build and deploy:

./build.sh
near deploy player.$NEAR_ACCT --wasmFile res/upgrade_player_example.wasm

Add a player:

near call player.$NEAR_ACCT add_player '{"game_num": 1, "player": {"name": "Roshan", "hero_class": "NEARkat", "health": 100, "level": 1 }}' --accountId $NEAR_ACCT
near view player.$NEAR_ACCT get_game_players '{"game_num": 1}'