{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe67d02ebe547506cc1714d2801e287e01441b8523e335db05ab420418c684cad",
    "signature": "0x919ab8f143594bd39d8e39fd4db10a70a1591a5a4b00c8cdeb92aed8b9d54b82020ca0a0c0423fc7d461c2831e9d6f5b77e984dc9fedffcf4111a890a9595d0e1c",
    "signer": "0xa52113b8f25d73acd11a98D38EA19ebe55d4a771",
    "userId": "310135321"
  }
}