{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "145972",
    "entityType": "User",
    "nonce": "0x3bcd5c11b7ea3f8aeb01a5834f66aee3d52fca2d4f38057629feb9ff0d35b5ac",
    "signature": "0x4ea680318de6d938c284e965af11dbeee225cafd810f0eefa8b5a140b05d673e557809e98a5a9f2e485ed3b9dfbe098a1324e05d362bed6edef416293fe3987c1c",
    "signer": "0x5A4a438EB48E0567283E8B2Fcb511DE3cD0Da231",
    "userId": "102202598"
  }
}