Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwE9tVtSq5zFi3nTbtw2wyL2hScLMy21Hd/x4d822vxQgwuVuH5JTkE+7ky1… (844 chars)"
  }
}