Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHxsJ/da4DP1BI2XJcG7C3JHfSHeVSRBWO+aM7Vopc6/QjIVxTGh1snxGHh… (844 chars)"
  }
}