Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwB+pVCcW9S3d0u2Ezl0f3T+DO3AGx9xqRcsIbwD/S0kqEZv7zcNWA6Vu94/… (844 chars)"
  }
}