title: REST API request body with python dictionary
body: <p>I am working with  AWS REST API. I am trying to invoke glue job via REST API. For that, I need to pass arguments as JSON object. And withing this json object, I should pass python dictionary as JSON value. 
  This is the request body,</p>
  
  <pre><code>   {
      "Arguments":{
      "jobParameter":"{
    'key1':'keyname=subvalue',
    'key2':'value2'
  }"
  
  },
      "JobName":"jobname"
      }
  </code></pre>
  
  <p><strong>python dictionary = {
        'key1':'keyname=subvalue',
        'key2':'value2'
      }</strong></p>
  
  <p>When I test the API by giving this as input, it gives an error,</p>
  
  <blockquote>
    <p>{
      "__type": "SerializationException"
    }</p>
  </blockquote>
  
  <p>Please can anyone help with this?</p>