acf api rest post or update
curl -X POST \
https://example.com/wp-json/wp/v2/pages/9 \
-H 'authorization: Bearer aVeryLongStringHere' \
-d '{
"fields": {
"example_field": "some interesting update"
}
}'
// works, 200, response:
{
"acf": {
"example_field": "some interesting update"
}
}