9223372036854775807, 1 => 'a:1:{i:0;O:31:"Doctrine\\ORM\\Mapping\\ManyToMany":7:{s:12:"targetEntity";s:6:"Artist";s:8:"mappedBy";N;s:10:"inversedBy";N;s:7:"cascade";a:1:{i:0;s:7:"persist";}s:5:"fetch";s:4:"LAZY";s:13:"orphanRemoval";b:0;s:7:"indexBy";N;}}', );