Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwFyYCRycpmBmfTLNRrNA+WU8GIr6QbW7Kza3f8t4w9PqnPJEiHIrn5yzLx/… (844 chars)"
  }
}