diff --git a/src/main/java/it/gov/pagopa/wispconverter/config/RedisConfig.java b/src/main/java/it/gov/pagopa/wispconverter/config/RedisConfig.java
index 56251ca7..562393df 100644
--- a/src/main/java/it/gov/pagopa/wispconverter/config/RedisConfig.java
+++ b/src/main/java/it/gov/pagopa/wispconverter/config/RedisConfig.java
@@ -40,4 +40,23 @@ public RedisTemplate<String, Object> registerRedisSimpleTemplate(final LettuceCo
         template.setConnectionFactory(connectionFactory);
         return template;
     }
+
+    @Bean(name = "redisBinaryTemplate")
+    public RedisTemplate<String, byte[]> registerRedisBinaryTemplate(final LettuceConnectionFactory connectionFactory) {
+        RedisTemplate<String, byte[]> template = new RedisTemplate<>();
+        template.setKeySerializer(new StringRedisSerializer());
+        template.setValueSerializer(new org.springframework.data.redis.serializer.RedisSerializer<byte[]>() {
+            @Override
+            public byte[] serialize(byte[] bytes) {
+                return bytes;
+            }
+
+            @Override
+            public byte[] deserialize(byte[] bytes) {
+                return bytes;
+            }
+        });
+        template.setConnectionFactory(connectionFactory);
+        return template;
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/it/gov/pagopa/wispconverter/repository/CacheRepository.java b/src/main/java/it/gov/pagopa/wispconverter/repository/CacheRepository.java
index 6b1ce7a8..1be03a60 100644
--- a/src/main/java/it/gov/pagopa/wispconverter/repository/CacheRepository.java
+++ b/src/main/java/it/gov/pagopa/wispconverter/repository/CacheRepository.java
@@ -17,6 +17,10 @@ public class CacheRepository {
     @Qualifier("redisSimpleTemplate")
     private RedisTemplate<String, Object> redisSimpleTemplate;
 
+    @Autowired
+    @Qualifier("redisBinaryTemplate")
+    private RedisTemplate<String, byte[]> redisBinaryTemplate;
+
     public void insert(String key, String value, long ttlInMinutes) {
         this.redisSimpleTemplate.opsForValue().set(key, value, Duration.ofMinutes(ttlInMinutes));
     }
@@ -36,6 +40,16 @@ public <T> T read(String key, Class<T> clazz) {
         return result;
     }
 
+    public byte[] readByte(String key) {
+        byte[] result = {};
+        try {
+            result = this.redisBinaryTemplate.opsForValue().get(key);
+        } catch (Exception e) {
+            log.error(String.format("Cannot correctly extract binary object retrieved with key [%s]", key));
+        }
+        return result;
+    }
+
     public boolean delete(String key) {
         Boolean isDeleted = this.redisSimpleTemplate.delete(key);
         return isDeleted != null && isDeleted;
diff --git a/src/main/java/it/gov/pagopa/wispconverter/service/ReceiptTimerService.java b/src/main/java/it/gov/pagopa/wispconverter/service/ReceiptTimerService.java
index 1aa0134b..83cb4d11 100644
--- a/src/main/java/it/gov/pagopa/wispconverter/service/ReceiptTimerService.java
+++ b/src/main/java/it/gov/pagopa/wispconverter/service/ReceiptTimerService.java
@@ -4,7 +4,6 @@
 import com.azure.messaging.servicebus.ServiceBusMessage;
 import com.azure.messaging.servicebus.ServiceBusSenderClient;
 import com.google.gson.Gson;
-import com.google.gson.JsonSyntaxException;
 import it.gov.pagopa.wispconverter.controller.model.ReceiptTimerRequest;
 import it.gov.pagopa.wispconverter.repository.CacheRepository;
 import it.gov.pagopa.wispconverter.service.model.ReceiptDto;
@@ -19,11 +18,10 @@
 import org.springframework.stereotype.Service;
 
 import javax.annotation.PostConstruct;
+import java.nio.charset.StandardCharsets;
 import java.time.OffsetDateTime;
 import java.time.temporal.ChronoUnit;
 import java.util.List;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
 
 @Service
 @Slf4j
@@ -34,7 +32,6 @@ public class ReceiptTimerService {
     public static final String PAYMENT_TOKEN_CACHING_KEY_TEMPLATE = "2_wisp_%s";
     private final CacheRepository cacheRepository;
     private final ReService reService;
-    private final Pattern paymentTokenCachingKeyTemplatePattern = Pattern.compile("\\s*(\\{.*\\})\\s*");
     @Value("${azure.sb.wisp-payment-timeout-queue.connectionString}")
     private String connectionString;
     @Value("${azure.sb.queue.receiptTimer.name}")
@@ -141,17 +138,14 @@ private void populateMDC(String paymentToken) {
         String domainId = null;
         String noticeNumber = null;
         try {
-            String cacheInfo = cacheRepository.read(String.format(PAYMENT_TOKEN_CACHING_KEY_TEMPLATE, paymentToken), String.class);
-            if (cacheInfo != null) {
-                Matcher matcher = paymentTokenCachingKeyTemplatePattern.matcher(cacheInfo);
-                if (matcher.matches()) {
-                    ReceiptTimerRequest receiptTimerRequest = new Gson().fromJson(matcher.group(1), ReceiptTimerRequest.class);
-                    MDC.put(Constants.MDC_SESSION_ID, receiptTimerRequest.getSessionId());
-                    domainId = receiptTimerRequest.getFiscalCode();
-                    noticeNumber = receiptTimerRequest.getNoticeNumber();
-                }
-            }
-        } catch (JsonSyntaxException e) {
+            byte[] primitiveByteArray = cacheRepository.readByte(String.format(PAYMENT_TOKEN_CACHING_KEY_TEMPLATE, paymentToken));
+            String byteArrayAsString = new String(primitiveByteArray, StandardCharsets.UTF_8);
+            String objectAsString = byteArrayAsString.substring(byteArrayAsString.indexOf('{'), byteArrayAsString.lastIndexOf('}') + 1);
+            ReceiptTimerRequest receiptTimerRequest = new Gson().fromJson(objectAsString, ReceiptTimerRequest.class);
+            MDC.put(Constants.MDC_SESSION_ID, receiptTimerRequest.getSessionId());
+            domainId = receiptTimerRequest.getFiscalCode();
+            noticeNumber = receiptTimerRequest.getNoticeNumber();
+        } catch (Exception e) {
             log.debug("Impossible to generate data for MDC from cached payment token.", e);
         }
         MDCUtil.setReceiptTimerInfoInMDC(domainId, noticeNumber, paymentToken);