{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "658980848",
    "entityType": "User",
    "nonce": "0x04c534fbf9dfa0fa7249a7cbfebd1c8c3c0b49286359ceccb2cef098cb384bb9",
    "signature": "0xbc641aa0eef2845f3a6c897d1655d19213aae50a25ec530e5c799b7c75fb7496543d2a79340d402fcffba133b293f62710dec3a3dd5a02a53b4df36ca99f65181c",
    "signer": "0x57C21B11f44F457EFB144679AF59836893069407",
    "userId": "497325386"
  }
}