Make alloy_rpc_types_eth::SubscriptionResult generic over tx (#1123)

Make alloy_rpc_types_eth::SubscriptionResult generic over tx

crates/rpc-types-eth/src/pubsub.rs

@@ -7,15 +7,15 @@ use serde::{de::Error, Deserialize, Deserializer, Serialize, Serializer};
 /// Subscription result.
 #[derive(Clone, Debug, PartialEq, Eq, Deserialize)]
 #[serde(untagged)]
-pub enum SubscriptionResult {
+pub enum SubscriptionResult<T = Transaction> {
     /// New block header.
     Header(Box<RichHeader>),
     /// Log
     Log(Box<Log>),
     /// Transaction hash
     TransactionHash(B256),
     /// Full Transaction
-    FullTransaction(Box<Transaction>),
+    FullTransaction(Box<T>),
     /// SyncStatus
     SyncState(PubSubSyncStatus),
 }
@@ -45,7 +45,10 @@ pub struct SyncStatusMetadata {
     pub highest_block: Option<u64>,
 }
 
-impl Serialize for SubscriptionResult {
+impl<T> Serialize for SubscriptionResult<T>
+where
+    T: Serialize,
+{
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
     where
         S: Serializer,