Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwFKz9zecvZxkm/rKuvK7GIEg9VFD3R9aQDre4fXe4wd30Bu4F9Mq3D0zydN… (844 chars)"
  }
}