_db = parss
_table = subscriber
_parent = root.psh.subscribers
_id = id

url
created
modified

_children = collection(Subscription)
_children.local = id
_children.foreign = subscriber_id
_children.accessName = topic_id

subscriptions = collection(Subscription)
subscriptions.local = id
subscriptions.foreign = subscriber_id
subscriptions.filter = status = 'verified'