diff --git a/ethers/providers/jsonrpc.nim b/ethers/providers/jsonrpc.nim
index 1784da0..554e88c 100644
--- a/ethers/providers/jsonrpc.nim
+++ b/ethers/providers/jsonrpc.nim
@@ -1,7 +1,6 @@
-import std/json
 import std/tables
 import std/uri
-import pkg/chronicles
+import pkg/chronicles except `%`
 import pkg/eth/common/eth_types_json_serialization
 import pkg/json_rpc/rpcclient
 import pkg/json_rpc/errors
@@ -11,6 +10,7 @@ import ../signer
 import ./jsonrpc/rpccalls
 import ./jsonrpc/conversions
 import ./jsonrpc/subscriptions
+import ./jsonrpc/json
 
 export json
 export basics
@@ -34,12 +34,14 @@ type
     subscriptions: JsonRpcSubscriptions
     id: JsonNode
 
-proc raiseJsonRpcProviderError(message: string) {.raises: [JsonRpcProviderError].} =
+proc raiseJsonRpcProviderError(
+  message: string) {.raises: [JsonRpcProviderError].} =
+
   var message = message
-  try:
-    message = parseJson(message){"message"}.getStr
-  except Exception:
-    discard
+  if json =? JsonNode.fromJson(message):
+    if "message" in json:
+      message = json{"message"}.getStr
+  echo "JsonRpcProviderError: ", message
   raise newException(JsonRpcProviderError, message)
 
 template convertError(body) =
diff --git a/ethers/providers/jsonrpc/subscriptions.nim b/ethers/providers/jsonrpc/subscriptions.nim
index fe15748..45ddcec 100644
--- a/ethers/providers/jsonrpc/subscriptions.nim
+++ b/ethers/providers/jsonrpc/subscriptions.nim
@@ -1,3 +1,4 @@
+import std/hashes
 import std/tables
 import std/sequtils
 import pkg/chronos
@@ -200,7 +201,7 @@ method subscribeBlocks(subscriptions: PollingSubscriptions,
       discard
 
   proc callback(id, change: JsonNode) =
-    if hash =? BlockHash.fromJson(change).catch:
+    if hash =? BlockHash.fromJson(change):
       asyncSpawn getBlock(hash)
 
   let id = await subscriptions.client.eth_newBlockFilter()
@@ -214,7 +215,7 @@ method subscribeLogs(subscriptions: PollingSubscriptions,
                     {.async.} =
 
   proc callback(id, change: JsonNode) =
-    if log =? Log.fromJson(change).catch:
+    if log =? Log.fromJson(change):
       onLog(log)
 
   let id = await subscriptions.client.eth_newFilter(filter)
diff --git a/ethers/transaction.nim b/ethers/transaction.nim
index 0ee9d2a..19ac8dc 100644
--- a/ethers/transaction.nim
+++ b/ethers/transaction.nim
@@ -1,5 +1,6 @@
 import pkg/stew/byteutils
 import ./basics
+import ./providers/jsonrpc/json
 
 type
   TransactionType* = enum
@@ -7,17 +8,17 @@ type
     AccessList = 1,
     Dynamic = 2
   Transaction* = object
-    sender*: ?Address
-    to*: Address
-    data*: seq[byte]
-    value*: UInt256
-    nonce*: ?UInt256
-    chainId*: ?UInt256
-    gasPrice*: ?UInt256
-    maxFee*: ?UInt256
-    maxPriorityFee*: ?UInt256
-    gasLimit*: ?UInt256
-    transactionType*: ?TransactionType
+    sender* {.serialize.}: ?Address
+    to* {.serialize.}: Address
+    data* {.serialize.}: seq[byte]
+    value* {.serialize.}: UInt256
+    nonce* {.serialize.}: ?UInt256
+    chainId* {.serialize.}: ?UInt256
+    gasPrice* {.serialize.}: ?UInt256
+    maxFee* {.serialize.}: ?UInt256
+    maxPriorityFee* {.serialize.}: ?UInt256
+    gasLimit* {.serialize.}: ?UInt256
+    `type`* {.serialize.}: ?TransactionType
 
 func `$`*(transaction: Transaction): string =
   result = "("
@@ -34,6 +35,6 @@ func `$`*(transaction: Transaction): string =
     result &= ", gasPrice: " & $gasPrice
   if gasLimit =? transaction.gasLimit:
     result &= ", gasLimit: " & $gasLimit
-  if txType =? transaction.transactionType:
+  if txType =? transaction.`type`:
     result &= ", type: " & $txType
   result &= ")"