Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAGDQA1zj8+uFsxcv4dF1yO/6G1olCDIJS8o5NvHlbnT9AZaWegv5VkUKsO9Hdp… (1,748 chars)"
  }
}