diff --git a/internal/db/model/delegation.go b/internal/db/model/delegation.go
index 2ed6d0d..5e5fd3f 100644
--- a/internal/db/model/delegation.go
+++ b/internal/db/model/delegation.go
@@ -151,3 +151,11 @@ func (d *BTCDelegationDetails) HasInclusionProof() bool {
 	// Ref: https://github.com/babylonlabs-io/babylon/blob/b1a4b483f60458fcf506adf1d80aaa6c8c10f8a4/x/btcstaking/types/btc_delegation.go#L47
 	return d.StartHeight > 0 && d.EndHeight > 0
 }
+
+func ToStateStrings(stateHistory []StateRecord) []string {
+	states := make([]string, len(stateHistory))
+	for i, record := range stateHistory {
+		states[i] = record.State.String()
+	}
+	return states
+}
diff --git a/internal/services/consumer_events.go b/internal/services/consumer_events.go
index 4df690b..f1e2119 100644
--- a/internal/services/consumer_events.go
+++ b/internal/services/consumer_events.go
@@ -13,17 +13,13 @@ func (s *Service) emitActiveDelegationEvent(
 	ctx context.Context,
 	delegation *model.BTCDelegationDetails,
 ) *types.Error {
-	stateHistory := make([]string, len(delegation.StateHistory))
-	for i, record := range delegation.StateHistory {
-		stateHistory[i] = record.State.String()
-	}
-
+	stateHistoryStrs := model.ToStateStrings(delegation.StateHistory)
 	stakingEvent := queuecli.NewActiveStakingEvent(
 		delegation.StakingTxHashHex,
 		delegation.StakerBtcPkHex,
 		delegation.FinalityProviderBtcPksHex,
 		delegation.StakingAmount,
-		stateHistory,
+		stateHistoryStrs,
 	)
 
 	if err := s.queueManager.PushActiveStakingEvent(&stakingEvent); err != nil {
@@ -36,17 +32,13 @@ func (s *Service) emitUnbondingDelegationEvent(
 	ctx context.Context,
 	delegation *model.BTCDelegationDetails,
 ) *types.Error {
-	stateHistory := make([]string, len(delegation.StateHistory))
-	for i, record := range delegation.StateHistory {
-		stateHistory[i] = record.State.String()
-	}
-
+	stateHistoryStrs := model.ToStateStrings(delegation.StateHistory)
 	ev := queuecli.NewUnbondingStakingEvent(
 		delegation.StakingTxHashHex,
 		delegation.StakerBtcPkHex,
 		delegation.FinalityProviderBtcPksHex,
 		delegation.StakingAmount,
-		stateHistory,
+		stateHistoryStrs,
 	)
 	if err := s.queueManager.PushUnbondingStakingEvent(&ev); err != nil {
 		return types.NewInternalServiceError(fmt.Errorf("failed to push the unbonding event to the queue: %w", err))
@@ -58,17 +50,13 @@ func (s *Service) emitWithdrawableDelegationEvent(
 	ctx context.Context,
 	delegation *model.BTCDelegationDetails,
 ) *types.Error {
-	stateHistory := make([]string, len(delegation.StateHistory))
-	for i, record := range delegation.StateHistory {
-		stateHistory[i] = record.State.String()
-	}
-
+	stateHistoryStrs := model.ToStateStrings(delegation.StateHistory)
 	ev := queuecli.NewWithdrawableStakingEvent(
 		delegation.StakingTxHashHex,
 		delegation.StakerBtcPkHex,
 		delegation.FinalityProviderBtcPksHex,
 		delegation.StakingAmount,
-		stateHistory,
+		stateHistoryStrs,
 	)
 	if err := s.queueManager.PushWithdrawableStakingEvent(&ev); err != nil {
 		return types.NewInternalServiceError(fmt.Errorf("failed to push the withdrawable event to the queue: %w", err))
@@ -80,17 +68,13 @@ func (s *Service) emitWithdrawnDelegationEvent(
 	ctx context.Context,
 	delegation *model.BTCDelegationDetails,
 ) *types.Error {
-	stateHistory := make([]string, len(delegation.StateHistory))
-	for i, record := range delegation.StateHistory {
-		stateHistory[i] = record.State.String()
-	}
-
+	stateHistoryStrs := model.ToStateStrings(delegation.StateHistory)
 	ev := queuecli.NewWithdrawnStakingEvent(
 		delegation.StakingTxHashHex,
 		delegation.StakerBtcPkHex,
 		delegation.FinalityProviderBtcPksHex,
 		delegation.StakingAmount,
-		stateHistory,
+		stateHistoryStrs,
 	)
 	if err := s.queueManager.PushWithdrawnStakingEvent(&ev); err != nil {
 		return types.NewInternalServiceError(fmt.Errorf("failed to push the withdrawn event to the queue: %w", err))