Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwGRY1tYGrRG700eyJ/2bvSYc0WKM3hBuGpDK+MmgXNcyT7+FRBSqIH8Fc0/… (844 chars)"
  }
}