{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "356472",
    "entityType": "User",
    "nonce": "0x338c600ff265a9e7599e00b59b36a46399f26b6e61962f510713729ce6edc085",
    "signature": "0x5f4b04625ad658ddb4ee1b2c09c6e4503c476586352a311d50b0a9e93b1fd6bb692087c7c22077ac02e9967e56273919c03efb2bd67910eeb8a886f2ce303d841c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}