Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHCvsU1Bx8el/vWNMFexWIT+m2lz4lKjDFVXJ/w88x4v2HJ7NPE+4h1rEK+… (844 chars)"
  }
}