Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwH7bTcO8mXT64vYZ9JBr83Hn57Ek/7bh9xpei0CSt4cMzIUdHGm8DdTakQZ… (844 chars)"
  }
}