{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x6343d1edb1adcaa59b35f9693aabaf90e0126ed271acbd60442b3eb8831228d5",
    "signature": "0x318b290ff9bc41fefb32d635a8b0f39900a07bd2d42855f74beac92454d40a630b74755d48aad0f9bbc13b2d08ec0fcefca9d936d3bbb07d31afccbac644d9d61b",
    "signer": "0x64F598C81c0625EA190d421bEe9C604A9EaD5ea6",
    "userId": "462839245"
  }
}