EVM: Fix LogIndex serialization (#2796)

* Fix logindex serialization

* Cleanup comments

* Fix typo

lib/ain-evm/src/log.rs

@@ -13,32 +13,30 @@ use crate::{
 
 /// Log represents a contract log event. These events are generated by the LOG opcode
 /// and stored/indexed by the node.
+/// Consensus fields: address, topics, data.
+/// Derived fields (filled in by node, not secured by consensus): block number, block hash,
+/// tx index, tx hash, log index, removed flag.
 #[derive(Serialize, Deserialize, Clone, Debug)]
 pub struct LogIndex {
-    // Consensus fields:
-    // Address of the contract that generated the event
-    pub address: H160,
+    // Hash of the block in which the transaction was included
+    pub block_hash: H256,
+    // Block in which the transaction was included
+    pub block_number: U256,
     // List of topics provided by the contract
     pub topics: Vec<H256>,
     // Supplied by the contract, usually ABI-encoded
     pub data: Vec<u8>,
-
-    // Derived fields. These fields are filled in by the node
-    // but not secured by consensus.
-    // Block in which the transaction was included
-    pub block_number: U256,
-    // Hash of the transaction
-    pub transaction_hash: H256,
-    // Index of the transaction in the block
-    pub transaction_index: U256,
-    // Hash of the block in which the transaction was included
-    pub block_hash: H256,
     // Index of the log in the block
     pub log_index: U256,
-
+    // Address of the contract that generated the event
+    pub address: H160,
     // The removed field is true if this log was reverted due to a chain reorganization.
     // You must pay attention to this field if you receive logs through a filter query.
     pub removed: bool,
+    // Hash of the transaction
+    pub transaction_hash: H256,
+    // Index of the transaction in the block
+    pub transaction_index: U256,
 }
 
 pub enum Notification {