[IIP-13] implement liquid staking indexer

action/protocol/execution/protocol_test.go

@@ -959,6 +959,9 @@ func TestProtocol_Handle(t *testing.T) {
 	t.Run("CVE-2021-39137-attack-replay", func(t *testing.T) {
 		NewSmartContractTest(t, "testdata/CVE-2021-39137-attack-replay.json")
 	})
+	t.Run("system-staking", func(t *testing.T) {
+		NewSmartContractTest(t, "testdata/system-staking.json")
+	})
 }
 
 func TestMaxTime(t *testing.T) {