Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGYKi/CgSyX4iS9K663oMszLyfiHRLi+CKBG2HHu3dzYHT+iDWDvHpUa8k9… (844 chars)"
  }
}