I am using WordPress 4.8 and trying to update user meta field using rest api built-in. I can update other fields of user but not the meta field of user. I try to POST the following json body to server, but i got no update at all. Hope anyone can show me some example how to do a post request to update user's meta field.
URL : http://example.com/wp-json/wp/v2/users/100
method : POST
content-type: application/json
body : {"meta":{"meta_key":"meta_value"}} or {"meta": {"key":"meta_key","value":"meta_value"}} or {"meta":[{"meta_key":"meta_value"}]} or {"meta":[{"key":"meta_key","value":"meta_value"}]}