updated_{$meta_type}_meta
Action Hook: Fires immediately after updating metadata of a specific type.
Source: wp-includes/meta.php:336
Action Hook: Fires immediately after updating metadata of a specific type.
Source: wp-includes/meta.php:336
Action Hook: Fires immediately after updating a post’s metadata.
Source: wp-includes/meta.php:350
Function: Deletes metadata for the specified object.
Source: wp-includes/meta.php:380