Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwE8M/jCvvpD5LKGVrmfgL8X+nDvUyc4YL6Ci5o5uYQwD28pMJE+XQqh81V+… (844 chars)"
  }
}