Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwDqSyeCu2QUhzKvH+T1IJ+l4oD7ju5hWegP/oDyZFPtzCbEHrp9EIEOjB5V… (844 chars)"
  }
}