{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x618d7db8c12317ea9a9c6679855fa2fe6451466ff13b0f6ef822fd9fbf7190b0",
    "signature": "0xe7ce9764a718b6bc01fac302745c5a88496ca31d9e3e0ce7c9286af11710774d463b2c9ce832a249db863d321671e44c6ce223192ee8a80ce76da36105957a621c",
    "signer": "0x740eaD4BcdcE71fa5544F4bd69Cf7f0A47e733af",
    "userId": "436960187"
  }
}