Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwGy58kcxo/pPWLBLR1N9ElVg7e5+DgR/Y63+WG8xwINWWFLcztl2sDDiWRJ… (844 chars)"
  }
}