How to authenticate coinbase commerce api in Laravel

[brijesh1997]

Hello Sir, I want to authenticate API key in Laravel. It means how can I check entered API key is valid or not. Pleas e give me a suggestion.

Thank you,

I am using,
"php": "^7.1.3",
"laravel/framework": "5.8.*",
"coinbase/coinbase-commerce": "^1.0",