{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5750ae64c7dbc50666139357d6c3bd04996069cec7383ebdca76f4f6c3b87cb3",
    "signature": "0xca42563b00e4ee0b419ce98b1e557eb9f147c534c05f5f8c3082d16f2d8e72726f709941c2b89c28067ed778b0b5768c82a1ece3700b6b912b235505558f2f161b",
    "signer": "0x40EE1E4eB4ec372B6B964C0205b2743Ef70869f9",
    "userId": "16752"
  }
}