{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe9c28a56df1bfbaedcf9e8a751232b76a7e34439eaededb6cb4ad1c23ac29dd0",
    "signature": "0x2a9d744cde5fae97107321909218b2bae760e8fc62ba7b40b161ccda50de42ef5b74f882f90ae0512f006124090c10baa924b50eabfb9aed55a94c1f8e58c53b1c",
    "signer": "0x175A3bebFa14E64C549CAc2962191B2B8C788421",
    "userId": "6270901"
  }
}