title: How can I extract the 64base value & replace the value in json format using awk or sed?
body: <p>How can I extract the base64 value shown below? I was trying to use something like <code>awk {'print $14'}</code>, but this doesn't work because the entire output is first item. If I decode the base64 value first, then I'm able to use <code>awk {'print $14'}</code> to eventually obtain the value that I need.</p>
  
  <blockquote>
    <p>$ curl -s --request GET <a href="http://10.0.10.10:8500/v1/kv/w-key-value" rel="nofollow noreferrer">http://10.0.10.10:8500/v1/kv/w-key-value</a></p>
  </blockquote>
  
  <pre><code>[{"LockIndex":0,"Key":"w-key-value","Flags":0,"Value":"WyAgeyAgICBDcmVhdGVJbmRleDogMTAwLCAgICBNb2RpZnlJbmRleDogMjAwLCAgICBMb2NrSW5kZXg6IDIwMCwgICAgS2V5OiB6aXAsICAgIEZsYWdzOiAwLCAgICBWYWx1ZTogMSAgICBTZXNzaW9uOiBhZGY0MjM4YS04ODJiLTlkZGMtNGE5ZC01YjY3NThlNDE1OWUgIH1d","CreateIndex":4080,"ModifyIndex":4080}]
  </code></pre>