{
  "contentType": "topic",
  "contentEncoding": "application/json",
  "headers": {},
  "deliveryMode": 1,
  "priority": 37,
  "correlationId": "500123",
  "replyTo": "example_value",
  "expiration": "example_value",
  "messageId": "500123",
  "timestamp": 628,
  "type": "topic",
  "userId": "500123",
  "appId": "500123",
  "clusterId": "500123"
}