Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwIq3tTBXXArB5aT1BMNBXYX1gRpXMoYFmFvu+e7hJvzTTT+BhT8txVuq2lB… (844 chars)"
  }
}