How to Post API in R having header & json body
<p>How to call API Post in R</p>

<p><strong>Request URL</strong>
<a href="https://westus.api.cognitive.microsoft.com/text/analytics/v2.0/sentiment" rel="nofollow">https://westus.api.cognitive.microsoft.com/text/analytics/v2.0/sentiment</a></p>

<p><strong>Request headers</strong>
Ocp-Apim-Subscription-Key = some value &amp;
Content-Type = application/json</p>

<p><strong>Body</strong> application/json</p>

<pre><code>{
  "documents": [
    {
      "language": "string",
      "id": "string",
      "text": "string"
    }
  ]
}
</code></pre>

<p>Please help!!!</p>