trying to unmarshal aws codepipeline result - go

Question

I am very new at Golang AWS SDK V2, I had similar code work without AWS results, but this one is getting me issues since the types are different. Also, I have search and none of the examples is with the code pipeline aws-sdk-v2 with the type of JSON I have to unmarshal.
I hope some of you can help me.
— This below is main.go I have the structs in another file called un-marshal.go that I created with the result of getting the same output I need from awscli tool and passing it by https://mholt.github.io/json-to-go/
package main
import (
"context"
"fmt"
"log"
"encoding/json"
"github.com/aws/aws-sdk-go-v2/config"
"github.com/aws/aws-sdk-go-v2/service/codepipeline"
)
func main() {
pipeline_name := "frontend"
// Load the Shared AWS Configuration (~/.aws/config)
cfg, err := config.LoadDefaultConfig(context.TODO(), config.WithRegion("eu-central-1"))
if err != nil {
log.Fatal(err)
}
if err != nil {
log.Fatalf("unable to load SDK config, %v", err)
}
client := codepipeline.NewFromConfig(cfg)
pipeJson, err := client.GetPipelineState(context.TODO(), &codepipeline.GetPipelineStateInput{
Name: &pipeline_name,
})
if err != nil {
log.Println("Error getting Pipeline")
}
var cookie PipeLineResult
json.Unmarshal(pipeJson, &cookie)
fmt.Println("The name of the pipeline is: %s",cookie.PipelineName)
}
The error I am getting is:
/main.go:39:17: cannot use pipeJson (variable of type *codepipeline.GetPipelineStateOutput) as type []byte in argument to json.Unmarshal
Here I am lost because it is a new type, and not sure if I should convert, how to convert or work with the native type etc.
Thanks in advance.