Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHGLDmFjcPyQBQrP0cTBXrMXMm0YnWu5g0sZD+c428FthPoYUFp1eB5KG5x… (844 chars)"
  }
}