Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwFWrUh2GkcfHP9AXi+dRv2T18c8OyD36i6Lh7/vJqHeaQ2Ks+Ihs3XRu9Pb… (844 chars)"
  }
}