{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121458",
    "entityType": "User",
    "nonce": "0x41b8ed879b136e6edef97bd0d5f9a0a8b90f1c2c725e7159c0dc91638499f548",
    "signature": "0xd53bc6c1b241c3d0d818c138ad0e3c6f50b8a42d7746f03706b21de4ff57f17f77381bf0ad9c245124e9216929d5352697433a48376174cc64bc158d0c2aa82f1c",
    "signer": "0x4993C3631eecd6e8c1635351A99C2103C7d6Be4b",
    "userId": "906184213"
  }
}