Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwFn0GxYaeIgg/+lzeANAkSEFrV1EJ1OeK0HRDzrsFz7uTn2+sg+iXw2nABi… (844 chars)"
  }
}