Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwEIftCBS6z7z+uGUusBE4QDVB/UR3L2tWIIlLFvB3EtuTfGGMynCp0vsa1H… (844 chars)"
  }
}