Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwArBfx2eP6B1UWaxtY0IeA+Bm2o+uYB/eSLAc3ud4FeEht2n3+aWWj+9aJ9… (844 chars)"
  }
}