Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwEJKZOQm7Cz/1pT3Pq2sQ2JVScmXhecy8BZNVoFP3szNWYTBrxiNLFBZAs/… (844 chars)"
  }
}