diff --git a/action/actctx.go b/action/actctx.go
index 4597fbf622..26fd70ed98 100644
--- a/action/actctx.go
+++ b/action/actctx.go
@@ -7,6 +7,9 @@ package action
 
 import (
 	"math/big"
+
+	"github.com/iotexproject/iotex-proto/golang/iotextypes"
+	"github.com/pkg/errors"
 )
 
 // AbstractAction is an abstract implementation of Action interface
@@ -85,3 +88,32 @@ func (act *AbstractAction) SanityCheck() error {
 	}
 	return nil
 }
+
+func (act *AbstractAction) toProto() *iotextypes.ActionCore {
+	actCore := iotextypes.ActionCore{
+		Version:  act.version,
+		Nonce:    act.nonce,
+		GasLimit: act.gasLimit,
+		ChainID:  act.chainID,
+	}
+	if act.gasPrice != nil {
+		actCore.GasPrice = act.gasPrice.String()
+	}
+	return &actCore
+}
+
+func (act *AbstractAction) fromProto(pb *iotextypes.ActionCore) error {
+	act.version = pb.GetVersion()
+	act.nonce = pb.GetNonce()
+	act.gasLimit = pb.GetGasLimit()
+	act.chainID = pb.GetChainID()
+	if price := pb.GetGasPrice(); price == "" {
+		act.gasPrice = &big.Int{}
+	} else {
+		var ok bool
+		if act.gasPrice, ok = new(big.Int).SetString(price, 10); !ok {
+			return errors.Errorf("invalid gas prcie %s", price)
+		}
+	}
+	return nil
+}
diff --git a/action/envelope.go b/action/envelope.go
index c07e69743b..9631a634ed 100644
--- a/action/envelope.go
+++ b/action/envelope.go
@@ -28,24 +28,11 @@ type (
 	}
 
 	envelope struct {
-		version  uint32
-		chainID  uint32
-		nonce    uint64
-		gasLimit uint64
-		gasPrice *big.Int
-		payload  actionPayload
+		AbstractAction
+		payload actionPayload
 	}
 )
 
-// Version returns the version
-func (elp *envelope) Version() uint32 { return elp.version }
-
-// ChainID return the chainID value
-func (elp *envelope) ChainID() uint32 { return elp.chainID }
-
-// Nonce returns the nonce
-func (elp *envelope) Nonce() uint64 { return elp.nonce }
-
 // Destination returns the destination address
 func (elp *envelope) Destination() (string, bool) {
 	r, ok := elp.payload.(hasDestination)
@@ -56,18 +43,6 @@ func (elp *envelope) Destination() (string, bool) {
 	return r.Destination(), true
 }
 
-// GasLimit returns the gas limit
-func (elp *envelope) GasLimit() uint64 { return elp.gasLimit }
-
-// GasPrice returns the gas price
-func (elp *envelope) GasPrice() *big.Int {
-	p := &big.Int{}
-	if elp.gasPrice == nil {
-		return p
-	}
-	return p.Set(elp.gasPrice)
-}
-
 // Cost returns cost of actions
 func (elp *envelope) Cost() (*big.Int, error) {
 	return elp.payload.Cost()
@@ -83,15 +58,7 @@ func (elp *envelope) Action() Action { return elp.payload }
 
 // Proto convert Envelope to protobuf format.
 func (elp *envelope) Proto() *iotextypes.ActionCore {
-	actCore := &iotextypes.ActionCore{
-		Version:  elp.version,
-		Nonce:    elp.nonce,
-		GasLimit: elp.gasLimit,
-		ChainID:  elp.chainID,
-	}
-	if elp.gasPrice != nil {
-		actCore.GasPrice = elp.gasPrice.String()
-	}
+	actCore := elp.AbstractAction.toProto()
 
 	// TODO assert each action
 	switch act := elp.Action().(type) {
@@ -143,19 +110,8 @@ func (elp *envelope) LoadProto(pbAct *iotextypes.ActionCore) error {
 	if elp == nil {
 		return ErrNilAction
 	}
-	*elp = envelope{}
-	elp.version = pbAct.GetVersion()
-	elp.nonce = pbAct.GetNonce()
-	elp.gasLimit = pbAct.GetGasLimit()
-	elp.chainID = pbAct.GetChainID()
-	if pbAct.GetGasPrice() == "" {
-		elp.gasPrice = big.NewInt(0)
-	} else {
-		gp, ok := new(big.Int).SetString(pbAct.GetGasPrice(), 10)
-		if !ok {
-			return errors.Errorf("invalid gas prcie %s", pbAct.GetGasPrice())
-		}
-		elp.gasPrice = gp
+	if err := elp.AbstractAction.fromProto(pbAct); err != nil {
+		return err
 	}
 
 	switch {
@@ -269,8 +225,5 @@ func (elp *envelope) LoadProto(pbAct *iotextypes.ActionCore) error {
 	return nil
 }
 
-// SetNonce sets the nonce value
-func (elp *envelope) SetNonce(n uint64) { elp.nonce = n }
-
 // SetChainID sets the chainID value
 func (elp *envelope) SetChainID(chainID uint32) { elp.chainID = chainID }