Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwFYJ/Vk2mUNU9XGWrUJLWUYGAl5jmbqO1cqongxTq0B+Uv+G3X6P+fD6xlQ… (844 chars)"
  }
}