diff --git a/types.go b/types.go
index fe55790..d42318e 100644
--- a/types.go
+++ b/types.go
@@ -1,10 +1,10 @@
 package rpc
 
 type UnsignedTransaction struct {
-	fee       int
-	networkID string
-	seq       int
-	action    Action
+	Fee       int    `json:"fee"`
+	NetworkID string `json:"network_id"`
+	Seq       int    `json:"seq"`
+	Action    Action `json:"action"`
 }
 
 type AssetScheme interface{}
@@ -12,8 +12,8 @@ type Asset interface{}
 type CommonParams interface{}
 
 type Text struct {
-	content   string `json:"content"`
-	certifier string `json:"certifier"`
+	Content   string `json:"content"`
+	Certifier string `json:"certifier"`
 }
 
 type Action interface {
@@ -85,16 +85,16 @@ type Custom struct {
 }
 
 type Transaction struct {
-	blockHash        string
-	blockNumber      int
-	transactionIndex int
-	result           bool
-	seq              int
-	fee              int
-	hash             string
-	networkID        string
-	sig              string
-	action           Action
+	BlockHash        string `json:"blockHash"`
+	BlockNumber      int    `json:"blockNumber"`
+	TransactionIndex int    `json:"transactionIndex"`
+	Result           bool   `json:"result"`
+	Seq              int    `json:"seq"`
+	Fee              string `json:"fee"`
+	Hash             string `json:"hash"`
+	NetworkID        string `json:"networkID"`
+	Sig              string `json:"sig"`
+	Action           Action `json:"action"`
 } // TODO Handle action details
 
 type Block struct {