Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwEb4ArdwDuiQgCVHVTLkPmGdN2liEf2rPrHegyg/t7vmhpVnqWW4w8kRGhC… (844 chars)"
  }
}