{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "351240",
    "entityType": "User",
    "nonce": "0x24d907b646c54cad15f3846fe7a8b67abcaa4910b5dcaebedd8e1ab7965262b6",
    "signature": "0x8daea4e179b35ff59f502c717738c38ec0faa420977c9049e8d04c550553f17b53b6582c55cfc0711c304567d158e17525531f32d31d14a1ba5c0f3a59f1f66c1c",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}