is it right string escaped?

[Miliardsto]

 Im making requests to REST API WORDPRESS

is it right code ?

$metabox = 'meta_box={"uuid":" ' & urlEncode($MY_ID) & ' "}'
 _httpRequest("https://MYSITE/wp-json/wp/v2/users/" & $id &"?", "POST", $metabox,$success)

In postman im making request like this and its working. it should be the same in autoit

https://MYSITE/wp-json/wp/v2/users/8?meta_box={"uuid": "2342342342"}