diff --git a/README.md b/README.md
index e69de29..c5a7682 100644
--- a/README.md
+++ b/README.md
@@ -0,0 +1,4 @@
+Use ```bash
+uv build
+```
+to build package. Then git commit & push. 
\ No newline at end of file
diff --git a/src/fiber_package/entities/submodels.py b/src/fiber_package/entities/submodels.py
index cc1e615..37e52fb 100644
--- a/src/fiber_package/entities/submodels.py
+++ b/src/fiber_package/entities/submodels.py
@@ -10,6 +10,10 @@ class LoginInfo:
     refresh_tokens: list[str] = field(default_factory=list)
     disabled: bool = False
 
+@dataclass(slots=True)
+class LoginInfoResponse:
+    username: str
+
 @dataclass(slots=True)
 class Address:
     street: str
diff --git a/src/fiber_package/entities/system.py b/src/fiber_package/entities/system.py
index ab11008..80276af 100644
--- a/src/fiber_package/entities/system.py
+++ b/src/fiber_package/entities/system.py
@@ -1,6 +1,6 @@
 from pydantic import BaseModel
 
-from .submodels import LoginInfo
+from .submodels import LoginInfo, LoginInfoResponse
 
 class LoginModel(BaseModel):
-    login: LoginInfo
\ No newline at end of file
+    login: LoginInfo | LoginInfoResponse
\ No newline at end of file