Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwG7476XCaYAGdImaaRIWMkGWb5uQkshzKRgUVb7Yp+k1xH/ztl3xJLmw/v3… (844 chars)"
  }
}