Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGdWHYEJ7iPHX0xaBvvfUOIo7kCfwu/ywE/5xW/CKomOFjE6vA+WKzdSUOB… (844 chars)"
  }
}