diff --git a/crates/aleph-types/src/message/instance.rs b/crates/aleph-types/src/message/instance.rs
index 92f1bce..f8189ec 100644
--- a/crates/aleph-types/src/message/instance.rs
+++ b/crates/aleph-types/src/message/instance.rs
@@ -6,11 +6,11 @@ use serde::{Deserialize, Serialize};
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 pub struct InstanceContent {
     #[serde(flatten)]
-    base: ExecutableContent,
+    pub base: ExecutableContent,
     /// Properties of the instance execution environment.
-    environment: InstanceEnvironment,
+    pub environment: InstanceEnvironment,
     /// Root filesystem for the instance.
-    rootfs: RootfsVolume,
+    pub rootfs: RootfsVolume,
 }
 
 #[cfg(test)]
diff --git a/crates/aleph-types/src/message/mod.rs b/crates/aleph-types/src/message/mod.rs
index 020b6f9..38d862f 100644
--- a/crates/aleph-types/src/message/mod.rs
+++ b/crates/aleph-types/src/message/mod.rs
@@ -8,7 +8,7 @@ mod program;
 mod store;
 
 pub use aggregate::AggregateContent;
-pub use base_message::{ContentSource, Message, MessageStatus, MessageType};
+pub use base_message::{ContentSource, Message, MessageContentEnum, MessageStatus, MessageType};
 pub use forget::ForgetContent;
 pub use instance::InstanceContent;
 pub use post::PostContent;