Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwC3G0myLKgzMa4i/NJLZ1eQxvuqBCVmqrgZYbjE2DSQfWjWYK9YnLsb0vxJ… (844 chars)"
  }
}