Each node (the

IPublishedContent

type that most page types will inherit from) has both a unique

Id

(generally 4+ digits but not always), e.g.

1234

, represented as an

int

. They also have a unique

Key

, e.g.

12345678-1234-1234-1234-123456789123

, represented as a

System.Guid

. Either of those could be used, probably the

Id

based on your example.

try

'PageID': '@UmbracoContext.PublishedRequest.PublishedContent.Id'

This should give you the Id of the currentpage

They can access the

IPublishedContent

from the .cshtml file for the pages using the sample code huwred gave.