Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwCH/qW3OtQz8L+f1/UKRlJdMnPlgaUt1cF9J+nmvca3jw2T3Hu2rzZ5mXCC… (844 chars)"
  }
}