{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xff28d8133438e136ebc1128a96756c7b640d25b8c8ccb13b64735c5c958542a2",
    "signature": "0x643e84a34f6377a3db4af2d467b69e5840d602ceafb3192229221332e25d65c2139084c8a49d3c413e2aac4905776a0f17cf1658ac132bdc705b29b160e01b671b",
    "signer": "0xa228dA0794005c958cFc691a6808417E21E60Aea",
    "userId": "151623966"
  }
}