[QUICK TASK - 1 DAY] Need help translating a piece of C# code into the Go language.

I require assistance in translating a piece of C# code into the Go language. The code performs several operations that interact with a REST API. Initially, it calls the API to acquire an access token. Once the access token is secured, it invokes a Write method to send data to the API. After successfully writing the data, the code then utilizes a ReadData method to retrieve data from the API. Throughout these processes, the data is serialized and deserialized in JSON format. The goal is to effectively execute these calls and manage the data in JSON.