How to parameterize the token value authorization on the header in golang

Question

I'm a newbie to go and trying to make a call to cyberark to grab a secret and trying to figure out on how to parametrize the token value.This value is derived from another rest API call that will happen before this API call. So I wanted to pass that response from the other API call and pass in here as token. Below is my code; I tried creating a variable for the token response I get from the other API call to be able to be used here, but running into different formatting errors like newline in string error and so on.

package main

    import (
    "fmt"
    "net/http"
    "io/ioutil"
    )

   func main() {

    url := "https://secrets.com/password"
     method := "GET"

     client := &http.Client {
     }
      req, err := http.NewRequest(method, url, nil)

      if err != nil {
      fmt.Println(err)
      return
     }
      req.Header.Add("Accept-Encoding", "base64")
      req.Header.Add("Authorization", "Token token=\"eyJwcm90ZWN0ZWQiOiJleU\"")
      req.Header.Add("Accept", "application/json")

     res, err := client.Do(req)
      if err != nil {
      fmt.Println(err)
      return
     }
     defer res.Body.Close()

    body, err := ioutil.ReadAll(res.Body)
     if err != nil {
      fmt.Println(err)
      return
     }
    fmt.Println(string(body))
   }