{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xebca7f7b3c0a8a0169e62a077a5953d4e15b18c11f190c4a0b6fa2fdeb175dec",
    "signature": "0x6e490f404db52a396c6c78f2d7eb8ed1273f2bd2d1665a0fdee5e42284d008d937819f42390eefad14b9ff04f5ec8b8e53ecb077721986133cbe2599330324091b",
    "signer": "0xd8664552A94959aeFE14D4F31155A3f4DC067719",
    "userId": "313388799"
  }
}