Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwBNhkCmLZZdpU7Hl/aKkx+ah1Uz6ms37fJBvZF9nyfrgXZCUl8yar2JV2i3… (844 chars)"
  }
}