{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "678556080",
    "entityType": "User",
    "nonce": "0x1946bfd57fbc3963c4c1112e030eadf1d1d8f9af007a2c16573a34fda9dc442b",
    "signature": "0x7debad30bc69fa186f8c7d8fdabdb1cb5079573d356ba51e427f3daedac744c774cd66158878941677690d482ca40bb9df72ddf15f460a4502db8bb4a1333a1d1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}