Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHR4vO/3+kgsyb76aCYObl/ZX4gUF6gf6ahfS3Lh0uGLz2sD11V0joB/sCG… (844 chars)"
  }
}