diff --git a/src/app.js b/src/app.js
index 977a295..acdcb27 100644
--- a/src/app.js
+++ b/src/app.js
@@ -44,6 +44,13 @@ const dataHandler = (messageSet, topic, partition) => Promise.each(messageSet, a
     return
   }
 
+  // Currently only process payments for challenges with `legacy.pureV5Task: true`
+  if (!_.get(messageJSON.payload, 'legacy.pureV5Task', false)) {
+    logger.info(`Challenge Legacy Object ${JSON.stringify(_.get(messageJSON.payload, 'legacy'))} does not have legacy.pureV5Task: true`)
+    await consumer.commitOffset({ topic, partition, offset: m.offset })
+    return
+  }
+
   if (_.toUpper(_.get(messageJSON.payload, 'type')) !== 'TASK' || _.toUpper(_.get(messageJSON.payload, 'status')) !== 'COMPLETED') {
     logger.info(`The message type ${_.get(messageJSON.payload, 'type')}, status ${_.get(messageJSON.payload, 'status')} doesn't match {type: 'Task', status: 'Completed'}.`)
 
diff --git a/src/services/processorService.js b/src/services/processorService.js
index 0dbbc5c..ee96b7e 100644
--- a/src/services/processorService.js
+++ b/src/services/processorService.js
@@ -103,7 +103,7 @@ processUpdate.schema = {
         }).unknown(true))
       }).unknown(true)).min(1),
       winners: Joi.array().items(Joi.object({
-        userId: Joi.string().required(),
+        userId: Joi.number().integer().positive().required(),
         handle: Joi.string(),
         placement: Joi.number().integer().positive().required()
       }).unknown(true)),