Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwELfGXe2fOMAiTJCQHWOajA4/4X2fHXMGdCFVx+pFWR/SXi0qcAOabZB0JO… (844 chars)"
  }
}