{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x72b6e43ced68ec750d8042260fb3ffe2f1118306d926829c2718c71b99f05d66",
    "signature": "0x76c3509d72299024146138a8221aa726d7f179258d441cec3611bcc7d6d58d982280f3d76fe956aaaa34117b760e0f91bd280f89522cbcef7bb6c252fb232af81b",
    "signer": "0x4B140b61EB41438Cda0Dd10473ad1334309C1b97",
    "userId": "45511108"
  }
}