diff --git a/pkg/wallet/account.go b/pkg/wallet/account.go
index 9b87c2e8f..a503d4906 100644
--- a/pkg/wallet/account.go
+++ b/pkg/wallet/account.go
@@ -4,9 +4,11 @@ import (
 	"encoding/hex"
 	"encoding/json"
 	"errors"
+	"fmt"
 
 	"github.com/CityOfZion/neo-go/pkg/crypto/hash"
 	"github.com/CityOfZion/neo-go/pkg/crypto/keys"
+	"github.com/CityOfZion/neo-go/pkg/smartcontract"
 	"github.com/CityOfZion/neo-go/pkg/util"
 )
 
@@ -50,7 +52,7 @@ type Contract struct {
 	Script []byte `json:"script"`
 
 	// A list of parameters used deploying this contract.
-	Parameters []interface{} `json:"parameters"`
+	Parameters []contractParam `json:"parameters"`
 
 	// Indicates whether the contract has been deployed to the blockchain.
 	Deployed bool `json:"deployed"`
@@ -62,12 +64,17 @@ type contract struct {
 	Script string `json:"script"`
 
 	// A list of parameters used deploying this contract.
-	Parameters []interface{} `json:"parameters"`
+	Parameters []contractParam `json:"parameters"`
 
 	// Indicates whether the contract has been deployed to the blockchain.
 	Deployed bool `json:"deployed"`
 }
 
+type contractParam struct {
+	Name string                  `json:"name"`
+	Type smartcontract.ParamType `json:"type"`
+}
+
 // ScriptHash returns the hash of contract's script.
 func (c Contract) ScriptHash() util.Uint160 {
 	return hash.Hash160(c.Script)
@@ -181,7 +188,21 @@ func newAccountFromPrivateKey(p *keys.PrivateKey) *Account {
 		privateKey: p,
 		Address:    pubAddr,
 		wif:        wif,
+		Contract: &Contract{
+			Script:     pubKey.GetVerificationScript(),
+			Parameters: getContractParams(1),
+		},
 	}
 
 	return a
 }
+
+func getContractParams(n int) []contractParam {
+	params := make([]contractParam, n)
+	for i := range params {
+		params[i].Name = fmt.Sprintf("parameter%d", i)
+		params[i].Type = smartcontract.SignatureType
+	}
+
+	return params
+}
diff --git a/pkg/wallet/account_test.go b/pkg/wallet/account_test.go
index 93847b991..f5e7db583 100644
--- a/pkg/wallet/account_test.go
+++ b/pkg/wallet/account_test.go
@@ -65,7 +65,7 @@ func TestNewAccountFromEncryptedWIF(t *testing.T) {
 func TestContract_MarshalJSON(t *testing.T) {
 	var c Contract
 
-	data := []byte(`{"script":"0102","parameters":[1],"deployed":false}`)
+	data := []byte(`{"script":"0102","parameters":[{"name":"name0", "type":"Signature"}],"deployed":false}`)
 	require.NoError(t, json.Unmarshal(data, &c))
 	require.Equal(t, []byte{1, 2}, c.Script)