{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4eebee22714ef55da52bc76594ba8c07076e5ab60da049fa78c007829c8c1d0b",
    "signature": "0x50a6181fcf4ee773eb1b130fce486fcf61e112d3fa19a38520087c9555218cde28c4ba21a7322513b7ca21ef9ec921e638926f757087227ff689e94ef7ddda571b",
    "signer": "0x7aC3F85502f0Ec15A2fb724d48947F89da8a99b8",
    "userId": "144391872"
  }
}