Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwG6+pXRfgDwRb7HDQDafZOtrSpuYWCONXNKT/sQN54Z/zf4mMw5zX9h4J4X… (844 chars)"
  }
}