{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbc30776a51a6de2eba55d1f0d08598b74231dd1297dcd0d7ab5cff0755f6d002",
    "signature": "0x2d3241feb92b8ba8dae7177ef83a553820d3404d6e7fc1f6c40526521d7082ca4298bf0c41b0b2a6a69ba043c4064fe6f91c0e0885f5ca50274d7fd325665f8e1c",
    "signer": "0x02a839FDd8Ca94Ea05c26e31d6F6f4C87F339200",
    "userId": "343058537"
  }
}