Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwD4cZSO7Oomvp1qiAacUO5NfS7YAMsuY+GurS2jNl3zUwAiJlJsmTe+K3uA… (844 chars)"
  }
}