diff --git a/build/rust/build.rs b/build/rust/build.rs
index 25567a2..3d9f519 100644
--- a/build/rust/build.rs
+++ b/build/rust/build.rs
@@ -11,7 +11,8 @@ fn main() -> Result<()> {
         "action.proto",
         "transfer.proto",
         "ping.proto",
-        "action_execute.proto"
+        "action_execute.proto",
+        "event.proto"
     ];
 
     let inclusions = &[
diff --git a/proto/aquila/event.proto b/proto/aquila/event.proto
new file mode 100644
index 0000000..917150c
--- /dev/null
+++ b/proto/aquila/event.proto
@@ -0,0 +1,13 @@
+syntax = "proto3";
+
+option ruby_package = "Tucana::Aquila";
+
+package aquila;
+
+// Event that gets admitted by an action
+message Event {
+  // Id of Event type
+  string event_type = 1;
+  // Payload (JSON) of event params
+  string payload = 2;
+}
\ No newline at end of file