diff --git a/src/wallet.ts b/src/wallet.ts
index b47a8257e..5b76a01ac 100644
--- a/src/wallet.ts
+++ b/src/wallet.ts
@@ -74,6 +74,12 @@ export interface CoinWithDenom {
   denom: DenominationRecord;
 }
 
+@Checkable.Class
+export class Payback {
+  @Checkable.String
+  h_denom_pub: string;
+}
+
 
 @Checkable.Class
 export class KeysJson {
@@ -89,6 +95,9 @@ export class KeysJson {
   @Checkable.String
   list_issue_date: string;
 
+  @Checkable.List(Checkable.Value(Payback))
+  payback?: Payback[];
+
   @Checkable.Any
   signkeys: any;