{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1669cbc70b538be58952ca699b2c5690b6138084b0b2123ed12d23284184ea6c",
    "signature": "0x244647711efd67e1cdd8cf168384912b06e68af7c064294a04f7271c50e6d853010a7b1009f950b7cee9b6c702e658b7788b6a397a2013b43e572d397602a76e1c",
    "signer": "0xE7743A7400A92290CfE93A3de48a3D4A33D9E97b",
    "userId": "802326336"
  }
}