{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x4b5f0331f9866f0508813252e8048dd71aae57beacfb28485620f39c72c54cfa",
    "signature": "0xfcac0409b06ebd1fc3f2265f47ee90747c9b1c3df2b0ebf5b6a35d492355ada9310e86afb3d0ee3c405a47d7da3db1b9c602b7e1d97c2c28f690b0367231bb561c",
    "signer": "0x05879c5e12AD06542dCf5d3192dDDeaa2faa3754",
    "userId": "445555"
  }
}