Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwBfkc8JNTQn0sNtg+Lla1O1/1uobNMxVA8VxVJCnR735gxjbOd1bPRbuDK3… (844 chars)"
  }
}