Your data will be serialized, if you save non-scalar values (e.g. array, object) as post meta. You must unserialize it:
$subs = get_post_meta( $post->ID );
$subs['_q1_subs'][0] = unserialize($subs['_q1_subs'][0]);
Your data will be serialized, if you save non-scalar values (e.g. array, object) as post meta. You must unserialize it:
$subs = get_post_meta( $post->ID );
$subs['_q1_subs'][0] = unserialize($subs['_q1_subs'][0]);