title: jq - How to iterate through keys of different names
body: <p>I've got JSON that looks like this </p>
  
  <pre><code>{
    "keyword1": {
      "identifier1": 16
    },
    "keyword2": {
      "identifier2": 16
    }
  }
  </code></pre>
  
  <p>and I need to loop through the keywords to get the identifiers (not sure if I'm using the right terminology here). Seems pretty simple, but because the keywords are all named different, I don't know how to handle that.</p>