{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "543686915",
    "entityType": "User",
    "nonce": "0xa8a3ff59eff4917961c15dc27fc380775861c84e95b8bef9e2bd55f478b51732",
    "signature": "0x1e4fdf2828dc220ed1243bb59a7fc83593adbf78f68977cd70390fc26b5a1801089423b9bfff9e3e522ef10a68e4c2a6b3e22c8d6c44870eec96d59f0c151d991c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}