{
  "data": {
    "subscription": "projects/test-project/subscriptions/my-subscription",
    "message": {
      "attributes": {
        "attr1": "attr1-value"
      },
      "data": "dGVzdCBtZXNzYWdlIDM=",
      "messageId": "message-id",
      "publishTime": "2021-02-05T04:06:14.109Z",
      "orderingKey": "ordering-key"
    }
  },
  "datacontenttype": "application/json",
  "id": "3103425958877813",
  "source": "//pubsub.googleapis.com/projects/test-project/topics/my-topic",
  "specversion": "1.0",
  "time": "2021-02-05T04:06:14.109Z",
  "type": "google.cloud.pubsub.topic.v1.messagePublished"
}