Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGVAyi2vPL4l75iMeT+UIr5IDN3GgY3KHuHSpMaMGqT/kj9Hf4LpS4A1Jz+… (844 chars)"
  }
}