{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x93c6cd7e08961e8e4adc28cf80c095ce6968cda4b5c3db171c2b6bbd6ebfff57",
    "signature": "0x482b5c37eb6c0fd7eace88b75afcb6032358a90d8b637f24828022dcc5f522981c9f1e04c2687d56f47673c3269fb93dbd82adc57990aeffc578ebeff12c227d1b",
    "signer": "0x53A4E185DAc7588016d96A25812E58A956DeBA9C",
    "userId": "757411767"
  }
}