Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwE5vt7NkjgLBNaxLHXFd6+QUl0pVgDNAB4DQQpvs1QpXCzPVTc76J6OpyuN… (844 chars)"
  }
}