{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x47f827f4480a5c9e3264afc96fd72cd1af873977cb94d7f67b2a181c33f66778",
    "signature": "0xc135b19a41e22d9b2827c456ab0d88a64d8a6b5ebd098627f3f0a1ad0cb860564a591ad414ff6fcc73f3e268fd5b7809dc0f3568d7c14e1277fc20b6e97f3e4e1c",
    "signer": "0xa9C46ABd29fFC11D3faA4BD5Da69d3acd4E65a16",
    "userId": "195140100"
  }
}