{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "317847",
    "entityType": "User",
    "nonce": "0x58516f7e75e0503795195b2bb4cee0cc3d578d97e37637ceecf4e6b8af142f21",
    "signature": "0x9a447c4a1c7fcf7051fc2a8553360915242f7d36e96545efa1c7d89c93bc9f0c34f31753dd4dfb9a24cec96d3fb8a6a6a252134e5cd6665320bf6f76875ca69b1b",
    "signer": "0x75a075dd45bE38AA2c27754D97d5d84dD624FeA5",
    "userId": "451351"
  }
}