{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5876432e886c05a38cf9d7a4ca0f128a3aaa24e94f74f7d8c4def5457bb5b5bd",
    "signature": "0xb9f0029d684c9771203857544d9db6eb506ef91126b071af663a75d9c9528b8e43ef0aa50b95404ae11098eb9f0f1d6a86d71feedb17ea5468ac8a9a588f4e721c",
    "signer": "0x7E915FA0e857276481e34ca82B4A88B53a13ED15",
    "userId": "396044630"
  }
}