JigsawBlockEntity
Typed block identifier (includes state support such as [facing=east]) to be replaced when jigsaw activated.
Connection between jigsaw nodes, as-is.
Associated structure name, jigsaw identifier, such as "template:bundle".
Required structure subset to be aligned with, such as, such as "template:pipe".
Pool in which jigsaws will be connected with each others, such as "template:bundle/pipe".
Block Entity will be saved without instantiating new one when transporting (via pistons, commands, etc.).