C# code to return decompressed gzip data

sample.cs

public class Script: ScriptBase{
  public override async Task < HttpResponseMessage > ExecuteAsync(){
    var response = new HttpResponseMessage();
    
    var contentAsString = await this.Context.Request.Content.ReadAsStringAsync().ConfigureAwait(false);
    
    var contentAsJson = JObject.Parse(contentAsString);
    
    var file = (string) contentAsJson("file");
    
    byte[] data = Convert.FromBase64String(file);
    
    string decompressedData = DecompressGzip(data);
    
    response.Content = CreateJsonContent(new JObject {
    ["gzipBody"] = decompressedData,
    }.ToString());
    
    return response;
  }
  
  
  private string DecompressGzip(byte[] compressedData)
  {
    using (MemoryStream compressedStream = MemoryStream(compressedData))
    using (GZipStream gzipStream = new GZipStream(compressedStream, CompressionMode.Decompress))
    using (MemoryStream decompressedStream = new MemoryStream())
    {
      gzipStream.CopyTo(decompressedStream);
      
      return Encoding.UTF8.GetString(decompressedStream.ToArray());
    }
  }
}