Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwDT6yZ+sQclv20+2BzW6w7a0Sg8y0O9XmYWG3/SPu8x1VcmIzrtdFMDXhPL… (844 chars)"
  }
}