{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0xbbe34bfd25c60b52afe20648f14533b363bc000d1792b686b2f265e8ade7ebd2",
    "signature": "0xf525f138422074c65729443f116f221e7f91a8b05523eff37e4fbc53a8c4627b66f242d21fa016b1dcf963efc5e8a84c668e3367ff369c16ed7c04c1684e0c751c",
    "signer": "0x2b543a53037Df22B1c0ee10269ad909db144A1F6",
    "userId": "995163974"
  }
}