Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwDYxEDsVB/KZSU3MSm84DFXyXL3JLvBFliNHgluF5p3BjVzp3pzI7eUA/F+… (844 chars)"
  }
}