Upload Image into Wordpress Media via API

Upload Image into Wordpress Media via API

Hi, 
I tried to upload image from Zoho Creator into Wordpress Media folder via api. 
I have issues wih my code and I don't knw how to fix it. 
  2.                 post_data = Map();
  3. post_data.put("media_urls","IMAGE_URL");
  4. header_data.put("Content-Type","image/jpeg");
  5. header_data.put("Content-Disposition","attachment; filename=" + imageDownloadResponse);
  6. header_data.put("Authorization","Basic XXXXXXXXXXXXX");
  7. uploadResponse = invokeurl
  8. [
  9. url :"https://site.com/wp-json/wp/v2/posts"
  10. type :POST
  11. parameters:post_data
  12. headers:header_data
  13. ];
  14. info uploadResponse;
First response says that 

  1. {
   code : "rest_cannot_create",
   message : "Sorry, you are not allowed to create posts as this user.",
   data : {
      status : 401
   }
}