Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwB6fGK2W1/p4TAFxws+jZHkBtwNPVKDqaU1hSzyJHF7vwwLH7OLieLTwXt+… (844 chars)"
  }
}