Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwGZrP9/TZzcuHiQg/pIlnIktPaU4sKznQMdq4LNH7Ssa1J+CneYBDO7msYz… (844 chars)"
  }
}