curl -X POST http://localhost:13579/api/license/activate \
  -H "Content-Type: application/json" \
  -d '{
    "payload": "eyJtYWNoaW5lX2lkIjoiQUJDREVGMTIzNDU2IiwiZXhwaXJ5IjoiIiwiZmVhdHVyZXMiOlsiZ3B1Iiwib2NyIl19",
    "signature": "MEQCICPbJzo4WOnPONGgh+uHPcSypmY7tnmptdWDAz/7hgDUAiA2Aik+m7/bbr9vHeKi3n7WopxeLvJ8dRUG4hDsu33ueA=="
  }'