Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwCazCJfwT4SSGX/vEQ2Nw4D87tM/tBnZO8cFV504FcYIG68JUjtG7N3Hj6/… (844 chars)"
  }
}