Solvedacf to rest api How to get ACF post object field with ACF fields

add_filter( 'acf/rest_api/{type}/get_fields', function( $data ) {
	if ( ! empty( $data ) ) {
		array_walk_recursive( $data, 'get_fields_recursive' );
	}

	return $data;
} );

add_filter( 'acf/rest_api/{type}/get_fields', function( $data, $request, $response ) {
	if ( $response instanceof WP_REST_Response ) {
		$data = $response->get_data();
	}

	if ( ! empty( $data ) ) {
		array_walk_recursive( $data, 'get_fields_recursive' );
	}

	return $data;
}, 10, 3 );

function get_fields_recursive( $item ) {
	if ( is_object( $item ) ) {
		$item->acf = array();
		if ( $fields = get_fields( $item ) ) {
			$item->acf = $fields;					
			array_walk_recursive( $item->acf, 'get_fields_recursive' );
		}
	}
}

/**
 * ACF Data in Post Object Response
 */

$types = ['post', 'page', 'product']

foreach ($types as $type) {
  add_filter( 'acf/rest_api/'.$type.'/get_fields', function( $data, $response ) use ($types) {

    if ( $response instanceof WP_REST_Response ) {
      $data = $response->get_data();
    }

    array_walk_recursive( $data, 'deepIncludeACFFields', $types );

    return $data;

  }, 10, 3 );
}

function deepIncludeACFFields( &$item, $key, $postTypes ) {
  if ( isset( $item->post_type ) && in_array( $item->post_type, $postTypes ) ) {
    $item->acf = get_fields( $item->ID );
  }
}

add_filter( 'acf/rest_api/page/get_fields', function( $data, $request, $response ) {
    if ( $response instanceof WP_REST_Response ) {
        $data = $response->get_data();
    }

    array_walk_recursive( $data, 'deepIncludeACFFields', array( 'rentals' ) );

    return $data;
}, 10, 3 );


function deepIncludeACFFields( &$item, $key, $postTypes ) {
    if ( isset( $item->post_type ) && in_array( $item->post_type, $postTypes ) ) {
        $item = get_fields( $item->ID );
    }
}