Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwHPS7BnCGJFbyXtq1UeEe9pHCJXLjyxaqo/L6lCJ8fAXWPGGE7brzSI5oXQ… (844 chars)"
  }
}