diff --git a/src/event/dto/heartbeat.dto.ts b/src/event/dto/heartbeat.dto.ts
index c2bfd8a..c744278 100644
--- a/src/event/dto/heartbeat.dto.ts
+++ b/src/event/dto/heartbeat.dto.ts
@@ -2,12 +2,12 @@ import { IsString } from 'class-validator';
 
 /**
  * DTO for a service replica heartbeat.
- * @property service - The unique name of the service.
- * @property replica - The unique ID of the replica.
+ * @property ServiceName - The unique name of the service.
+ * @property ReplicaId - The unique ID of the replica.
  */
 export class HeartbeatDto {
   @IsString()
-  service: string;
+  ServiceName: string;
   @IsString()
-  replica: string;
+  ReplicaId: string;
 }
diff --git a/src/event/event.controller.ts b/src/event/event.controller.ts
index 9ce2e1a..a85e581 100644
--- a/src/event/event.controller.ts
+++ b/src/event/event.controller.ts
@@ -37,11 +37,11 @@ export class EventController {
   @Post('heartbeat')
   async processHeartbeat(@Body() event: HeartbeatDto): Promise<void> {
     // Extract the order context from the event
-    const { service, replica } = event;
+    const { ServiceName, ReplicaId } = event;
     this.logger.debug(
-      `Received heartbeat for replica "${replica}" of service "${service}"`,
+      `Received heartbeat for replica "${ReplicaId}" of service "${ServiceName}"`,
     );
 
-    this.eventService.heartbeat(service, replica);
+    this.eventService.heartbeat(ServiceName, ReplicaId);
   }
 }