Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHO8G+w7hfPV8m7LMO5uvmBznSY6GBSE5i42hM2DMC0Yy9/Chv3Zlj4vR8A… (844 chars)"
  }
}