Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwL1A9LMbz7AZwx6D/CcFjrj+8gY447HKlS036oRbU75hAmDDdpTg9Jl2xYx… (844 chars)"
  }
}