{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x29b2d12b83b0ab903c560ba3633d25ceac12c86486c23bfb0377bac12f50b6c3",
    "signature": "0x3c1a6f511ab8104307087abfc04def17cefe2b07b93264e45dea48435919ad4520222ae20887742a9de79e477625baa7b619b70745ca53115435c746c6adf34d1b",
    "signer": "0x494FD286733034c5F46B1A07c5729bc6E919e889",
    "userId": "602484333"
  }
}