Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGP+6wK+HLj1+Y0RHmKfTkniuC3nzwfPfIwXnT8+WZfvFaSq4PH1aQoW4cc… (844 chars)"
  }
}