diff --git a/src/interfaces/PubkeyDomain.ts b/src/interfaces/PubkeyDomain.ts
new file mode 100644
index 00000000..a075bf2a
--- /dev/null
+++ b/src/interfaces/PubkeyDomain.ts
@@ -0,0 +1,4 @@
+export interface PubkeyDomain {
+    domain: string;
+    updated_at: number;
+}
\ No newline at end of file