{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728580279",
    "entityType": "User",
    "nonce": "0x539210bb3f777110f1f1a4345747058795746af569f657c5df5969b428c57815",
    "signature": "0xdfc29a25797a6b2da509ec120adfee9c70a07f37ac148d32054cf90752bed4921d1776c96f2de3249638d6c8bd1ec29d3d418e39169dcdb4cf106842f20f5da21b",
    "signer": "0xe411E2E936615C41B798cEE1E2aFC9101964dff8",
    "userId": "71251085"
  }
}