Add Support for Nethermind and Besu 'syncing' Subscription Payload Format (#7306)

* Add Support for Nethermind and Besu 'syncing' Subscription Payload Formats

* Add CHANGELOG note for PR7306

Author: chebykin

CHANGELOG.md

@@ -2729,6 +2729,12 @@ If there are any bugs, improvements, optimizations or any new feature proposal f
 
 ## [Unreleased]
 
+### Added
+
+#### web3-eth
+
+-   `syncing` subscription now supports Besu and Nethermind payload format
+
 ### Changed
 
 #### web3-eth

packages/web3-eth/src/web3_subscriptions.ts

@@ -163,7 +163,7 @@ export class SyncingSubscription extends Web3Subscription<{
 			this.emit('changed', data);
 		} else {
 			const mappedData: SyncOutput = Object.fromEntries(
-				Object.entries(data.status).map(([key, value]) => [
+				Object.entries(data?.status || data).map(([key, value]) => [
 					key.charAt(0).toLowerCase() + key.substring(1),
 					value,
 				]),