{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "254245",
    "entityType": "User",
    "nonce": "0x61c73fc248bb3364d2ada705b473ceb83ccaf12617386fcffe1ac8a286358664",
    "signature": "0xc26b39145ef0846e2cb3a728b1f35b4c6a3ab274dcb90599e5d67b36016690903e9083815fb79cc98c7d171c0d9595c08f5495f877e316b594880d7715cb676b1b",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}