curl -X POST http://localhost:13579/api/license/activate \
  -H "Content-Type: application/json" \
  -d '{
    "payload": "eyJtYWNoaW5lX2lkIjoiQUJDREVGMTIzNDU2IiwiZXhwaXJ5IjoiMjAyNi0xMi0zMSIsImZlYXR1cmVzIjpbImdwdSIsIm9jciJdfQ==",
    "signature": "8RX02Fa4HDU6pYr8nXmbxm+Df2i9esf7pnOXke6LlMT33eUxN6FP3YNFzTl4OquYTSeTUaly5p7MX3e2SWg98g=="
  }'