NodeShuffler/save_err1.json

{
	"layers":[
		[
			{"name":"1"},
			{"name":"2"}
		],
		[
			{"name":"3"},
			{"name":"4"},
			{"name":"5"}
		],
		[
			{"name":"6"},
			{"name":"7"}
		]
	],
	"edges":[
		{"source":"1","target":"5"},
		{"source":"2","target":"5"},
		{"source":"3","target":"7"},
		{"source":"5","target":"7"},
		{"source":"4","target":"7"}
	]
}