Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwFqYVcr8yceAZ0SXtirww/UhD9F+iWa9gqzaf3+PQlnXmk6p35G8xHHf5nC… (844 chars)"
  }
}