Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwARAuYlPzteNDv3+9F7t/6vD9pZNu8vpbcj6c4Vu/4vmmVjGS8OMwt95Dma… (844 chars)"
  }
}