Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwHQEKwU0FsXoz6iHjxiiC4eSBsQQZEYEGuFLF6GrNMd/E54emUWVnB8Z5Y9… (844 chars)"
  }
}