{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137943",
    "entityType": "User",
    "nonce": "0x1dd246a278781bad855db0b489174dc7179405cc98a43a5531e95aa0dc0a3c1a",
    "signature": "0x054602edb1bde10a3ab773aa4d52471a393f87362fbcc55afc0c41d1a9a8574743c92b7a9d2f866650f099b37cba4bfc9f720feb4c13f4c5af6e8b812cb9c1bc1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}