{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x18a1ca6274ba1d8e0a3d697b836984c1df05c50e1094d05ada7b8c76940ea95b",
    "signature": "0xeb5f574aed900b3fb45743d054beebc574499ffbb52e16add35256f9c54fb15b01595b1dd47a94e842ebf21f678d2252832c4e1c3efc58f7689e4fd0ca2efd311b",
    "signer": "0xA7A7374621D7058E4eFa28c4A77dD50960D47175",
    "userId": "909379677"
  }
}