Add metadata when posting with WP API REST

Hello,

I would like your help to add metadata when using WP API:

I’m using WordPress REST API to create blog posts and I would like to fill Yoast field using REST API.

Request POST : https://mysite/wp-json/wp/v2/posts/

JSON :

{
“title”: “Your Title”,
“content”: “Your Content”,
“meta”: {
“_yoast_wpseo_title”: “SEO Title”,
“_yoast_wpseo_metadesc”: “SEO Desc”
“_yoast_wpseo_focuskw’”: “my keyword”
}
}

I tried many things but nothing is working ( I tired “meta” “yoast_meta”, and many many)

Maybe I have to create custom api fields, do you have any documentation ?