code: public CoinbaseAccountChanges getCoinbaseAccountChanges(Integer page) throws IOException {
  
      final CoinbaseAccountChanges accountChanges =
          coinbase.getAccountChanges(
              page,
              exchange.getExchangeSpecification().getApiKey(),
              signatureCreator,
              exchange.getNonceFactory());
      return accountChanges;
    }
docs: Authenticated resource which returns all related changes to an account. This is an alternative
  to the {@code getCoinbaseTransactions} API call. It is designed to be faster and provide more
  detail so you can generate an overview/summary of individual account changes.
  
  @param page Optional parameter to request a desired page of results. Will return page 1 if the
  supplied page is null or less than 1.
  @return The current user, balance, and the most recent account changes.
  @throws IOException
  @see <a
  href="https://coinbase.com/api/doc/1.0/account_changes/index.html">coinbase.com/api/doc/1.0/account_changes/index.html</a>