my $string       = '[1,962,[["x",0,"0.1","1.106"]]][1,963,[["x",0,"0.663","0.0"]]]';
$string         .= '[1][1,562,[["x",0,"0.579","1.1"]]][1,563,[["x",0,"0.546","0.0"],["x",0,"0.94","1.8"]]]';

Erhofft:
[1,962,[["x",0,"0.1","1.106"]]]
[1,963,[["x",0,"0.663","0.0"]]]
[1]
[1,562,[["x",0,"0.579","1.1"]]]
[1,563,[["x",0,"0.546","0.0"],["x",0,"0.94","1.8"]]]

Realitaet:
[1,962,[["x",0,"0.1","1.106"]]]
[["x",0,"0.663","0.0"]]]
[1,562,[["x",0,"0.579","1.1"]]]