diff --git a/llama_stack/apis/common/content_types.py b/llama_stack/apis/common/content_types.py
index aace08ed7..0d0afa894 100644
--- a/llama_stack/apis/common/content_types.py
+++ b/llama_stack/apis/common/content_types.py
@@ -28,7 +28,7 @@ class _URLOrData(BaseModel):
 
     url: Optional[URL] = None
     # data is a base64 encoded string, hint with contentEncoding=base64
-    #######data: Optional[str] = Field(contentEncoding="base64", default=None)
+    data: Optional[str] = Field(contentEncoding="base64", default=None)
 
     @model_validator(mode="before")
     @classmethod