Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwAIzhZ9i3sFsjHmKoMO8TbPiXxqDPwE9JcNkM+92Jgbjn3VKiMzZ9g2wm6/… (844 chars)"
  }
}