Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwDL5uAu7S8x3H+kBqCwsG+ZjY1V8huHgwHg6xfSAJnAABg7XGe6KzXt2mdw… (844 chars)"
  }
}