Subsquid deserialization fixes

* Fixed float `timestamp` field on Subsquid deserialization
* Fixed empty `gas_used` field on Subsquid Event deserialization

CHANGELOG.md

@@ -6,6 +6,13 @@ The format is based on [Keep a Changelog], and this project adheres to [Semantic
 
 Releases prior to 7.0 has been removed from this file to declutter search results; see the [archived copy](https://github.com/dipdup-io/dipdup/blob/8.0.0b5/CHANGELOG.md) for the full list.
 
+## [Unreleased]
+
+### Fixed
+
+- subsquid: Fixed float type for `timestamp` field on event / transaction deserialization.
+- subsquid: Fixed empty field base conversion on event deserialization.
+
 ## [8.1.3] - 2024-12-20
 
 ### Fixed

src/dipdup/models/evm.py

@@ -49,7 +49,7 @@ def from_subsquid_json(cls, event_json: dict[str, Any], header: dict[str, Any])
             data=event_json['data'],
             level=header['number'],
             log_index=event_json['logIndex'],
-            timestamp=header['timestamp'],
+            timestamp=int(header['timestamp']),
             topics=tuple(event_json['topics']),
             removed=False,
             transaction_hash=event_json['transactionHash'],
@@ -163,7 +163,7 @@ def from_subsquid_json(
             from_=transaction_json['from'],
             gas=int(transaction_json['gas'], 16),
             gas_price=int(transaction_json['gasPrice'], 16),
-            gas_used=int(transaction_json['gasUsed'], 16),
+            gas_used=int(transaction_json['gasUsed'], 16) if transaction_json['gasUsed'] else None,
             hash=transaction_json['hash'],
             input=transaction_json['input'],
             level=header['number'],
@@ -174,7 +174,7 @@ def from_subsquid_json(
             s=transaction_json['s'],
             # sighash=transaction_json['sighash'],
             status=transaction_json['status'],
-            timestamp=header['timestamp'],
+            timestamp=int(header['timestamp']),
             to=transaction_json['to'],
             transaction_index=transaction_json['transactionIndex'],
             type=transaction_json['type'],