Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHvuoRgc0FlTF6gL/xC3gSB8zL1NzQ4r5h13JA/O1essR3dXq+qBZN1BrCq… (844 chars)"
  }
}