Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwE4qfj7P9eRIkqYnXV5EXPn8/lkR8aVGcroasmTulm1YTNsOiRW1cBL4Ntg… (844 chars)"
  }
}