diff --git a/keyserver/addons/rust-node-addon/rust-binding-types.js b/keyserver/addons/rust-node-addon/rust-binding-types.js
--- a/keyserver/addons/rust-node-addon/rust-binding-types.js
+++ b/keyserver/addons/rust-node-addon/rust-binding-types.js
@@ -1,11 +1,7 @@
 // @flow
 
 import type { SignedIdentityKeysBlob } from 'lib/types/crypto-types.js';
-
-type UserLoginResponse = {
-  +userId: string,
-  +accessToken: string,
-};
+import type { UserLoginResponse } from 'lib/types/identity-service-types.js';
 
 type InboundKeyInfoResponse = {
   +payload: string,
diff --git a/lib/types/identity-service-types.js b/lib/types/identity-service-types.js
new file mode 100644
--- /dev/null
+++ b/lib/types/identity-service-types.js
@@ -0,0 +1,6 @@
+//@flow
+
+export type UserLoginResponse = {
+  +userId: string,
+  +accessToken: string,
+};