title: Python raw json string serialization
body: <p>i have a dictionary in python with one string variable like below (Of Course there are many other string fields there in the json, but only few are json escaped strings)</p>
  
  <pre><code>obj_dict = dict(details="{\"name\":\"Vyshakh\",\"martial_status\" : \"Single\"}")
  </code></pre>
  
  <p>how can I convert such an object to normal json as below:</p>
  
  <pre><code>{
     details : {
         name : "Vyshakh",
         martial_status : "Single"
     }
  }
  </code></pre>
  
  <p>In Java using Jackson I can annotate a field using @JsonRawValue, what is the best way in Python to achieve the same</p>