Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwFLmZvs3IxRZ5vS/c6OfGrs+gNKWoVxfcnbaK4H3QWDECvJccu2kAZ6ZtGY… (844 chars)"
  }
}