Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwBmeInAOCmM6TT5OSPvXNQEn/LvGQP6u8l6OJ9ZyW+HNW9zFLTQI/GoIx4X… (844 chars)"
  }
}