Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwA8Oc9Q+MmZWNbKqcxXci2rFe1Tj15df6bLdW0LNJZANwiZeyI1uSu8y5YI… (844 chars)"
  }
}