Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwA2nkw5vVNI+ddYFnYpM+9sTt9fK3Ss9gmmM1wqsM8sJAMzrtmMDTGYKPhI… (844 chars)"
  }
}