title: nativescript post request using body form-data
body: <p>I want to send a user JSON object to a login post url like in the screenshot from postman .
  to have a successful login it must be exactly as in the screenshot, otherwise I receive user object not found in the response from the api .
  So I did not succeed to send a valid user object as the requirement .</p>
  
  <p>I get successful login only with postman . I need a solution for nativescript (typescript)</p>
  
  <p><a href="https://i.stack.imgur.com/JDbrJ.png" rel="nofollow noreferrer">postman screenshot</a></p>