Usage of special character "@" in JOLT template
<p>Please help me in writing the jolt spec to get the expected output with special character "@" as shown below. When I place "@FirstName":"Names.FirstName" in the spec it is not working. Please help in resolving this.</p>

<p>JSON Input:</p>

<pre><code>{
    "FirstName": "First"
}
</code></pre>

<p>Jolt Spec:</p>

<pre><code> [
      {
        "operation": "shift",
        "spec": {
          "FirstName": "Names.FirstName"
        }
      }
    ]
</code></pre>

<p>Expected Output:</p>

<pre><code>{
  "Names" : {
    "@FirstName" : "First"
  }
}
</code></pre>