Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwCZ8GDi6hFZSbC3d2UpAewoJK/13AE1b/+oQhlcSkQ4tF7Ym9U2kwO7Z58/… (844 chars)"
  }
}