Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwC/OdwhKkGwjzLQp/GRRjBbGIaFlTfNQTI3YF1Ib6FvViJRF0FON7xpyAtZ… (844 chars)"
  }
}