{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe250955723792b79495b18dc5e335d4836d21a9e8fe7d45a9c4126f47fed2977",
    "signature": "0x143ed7f297417cccd3ae1672039e974490f96f5aa39f5172a339c5214018acc048feef95376c1f0e50f07388e2aab0fe64ea7c1148169c85e750c4679d6df3661b",
    "signer": "0xCf935912401212345CAf723421Edcab4F675a495",
    "userId": "915454181"
  }
}