{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf015a0c35aad05c5de198ea3bd508714d6f47878bc266ecb30591a207338d8e5",
    "signature": "0xc22510a60f7f068b1965d551c919d6e5d28c30fca5363b05ad54fa0c8c9b098b157adb279dcf1f5a3462e497d21b650f9e36541aca9472adf6cf0d5b97551ea41b",
    "signer": "0xFF1518Ff7c8a2E19BB6a4491ba3DA4b38e21b4A4",
    "userId": "765405079"
  }
}