{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaa7b4e19ac8838690b9ab040b0410d6571cdd6e6ca80983625975db6c7f78725",
    "signature": "0xccac9f91d255b6df5335cbcad40aa284ce1c7a4b46341d261b04d0e8961b29e311fbd6eaa770d2f4a85a5e7841f3bde07f70f96bf28dc55c8a9bca4b2a51b2791c",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}