Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwBx+Pw6LmwG1On3y/V9/bACkChFW9DMymvmZ7afbAJmzlF3Kp8vXR2o5sW9… (844 chars)"
  }
}