Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwBC2sgZ6vPe8RnIPwwfkZjlRxDPCc6IfRaXFV6+vi8evCTn2/eYr8hOw6B7… (844 chars)"
  }
}