diff --git a/src/serialization.rs b/src/serialization.rs
index d744edc..1f517e4 100644
--- a/src/serialization.rs
+++ b/src/serialization.rs
@@ -2,10 +2,12 @@ use serde::{Deserialize, Deserializer, Serialize, Serializer};
 use serde::de::Error;
 use sp_client::bitcoin::hex::{DisplayHex, FromHex};
 use sp_client::bitcoin::OutPoint;
+use tsify::Tsify;
 use std::collections::{BTreeMap, HashMap};
 use crate::{pcd::Member, process::Process};
 
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug, Serialize, Deserialize, Tsify)]
+#[tsify(from_wasm_abi)]
 pub struct OutPointMemberMap(#[serde(with = "members_map")] pub HashMap<OutPoint, Member>);
 
 #[derive(Debug, Serialize, Deserialize)]