Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwGuh/D4l7EHKuHbBzSs575u2B7ct+Oc/0nST9fBNy6ZPTSNZw4ixZ6jVEy4… (844 chars)"
  }
}