graphql_user_object_mutation_update_additional_data

do_action( 'graphql_user_object_mutation_update_additional_data', int $user_id, array $input, string $mutation_name, AppContext $context, ResolveInfo $info );

/**
 * Run an action after the additional data has been updated. This is a great spot to hook into to
 * update additional data related to users, such as setting relationships, updating additional usermeta,
 * or sending emails to Kevin... whatever you need to do with the userObject.
 *
 * @param int $user_id The ID of the user being mutated
 * @param array $input The input for the mutation
 * @param string $mutation_name The name of the mutation (ex: create, update, delete)
 * @param AppContext $context The AppContext passed down the resolve tree
 * @param ResolveInfo $info The ResolveInfo passed down the Resolve Tree
 */
add_action( 'graphql_user_object_mutation_update_additional_data', 'graphql_register_user_mutation', 10, 5 );
function graphql_register_user_mutation( $user_id, $input, $mutation_name, $context, $info ) {
	if ( isset( $input['hobbies'] ) ) {
		// Consider other sanitization if necessary and validation such as which
		// user role/capability should be able to insert this value, etc.
		update_user_meta( $user_id, 'hobbies', $input['hobbies'] );
	}
}