diff --git a/playground/playground.json b/playground/playground.json
new file mode 100644
index 0000000..16a10e8
--- /dev/null
+++ b/playground/playground.json
@@ -0,0 +1,415 @@
+{
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+  "last_link_id": 24,
+  "nodes": [
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+          "type": "LATENT",
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+  "groups": [],
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+}
\ No newline at end of file