Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHYIkC+F2pCc5uDtGLcIyBCuWUeq+4Mm0OhKepMj1rQlGx3UEn5g6Yi/qg+… (844 chars)"
  }
}