API authentication in Perl

I need a very simple Perl program to connect to the Cryptopia private API (authentication required) and return my current balances (GetBalance). If you know what you are doing, this will be a very simple task. If you don't, it will be complicated, so see API documentation first and bid accordingly. (You can simply print the json to screen to demonstrate in worked.) You'll need to sign up for a (free) Cryptopia account to get a API key pair for testing. API documentation: API specs: [login to view URL]