title: Is there a way to use post method on MAP type json using API?
body: <p>I'm new on using flutter api. I know there are 2 method(<code>post</code> and <code>get</code>) when using APIs. I'm fully understand on how to use <code>get</code>method on MAP and List type json but a bit short when using <code>post</code> method. So I want to ask is there a way or references to use <code>post</code> method for my json file?
  (sorry for my english)</p>
  <p>this is my json file</p>
  <pre><code>{
      &quot;userId&quot;: &quot;008&quot;,
      &quot;entityNumber&quot;: &quot;1111&quot;,
      &quot;newEntityNumber&quot;: &quot;1111&quot;,
      &quot;Data&quot;: [
          {
              &quot;productId&quot;: 1,
              &quot;inCart&quot;: false
          }
      ]
  }
  </code></pre>