{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8040",
    "entityType": "User",
    "nonce": "0xc8cc3713ed9306f9c584bba8f5bf8c7bcb22bbbeb99c93bdabaaf1c366e983c8",
    "signature": "0xd40d920df8167c5d451327d6df8b31f66fc4f8517d8ffd902fec7eef66ec62901e05455e806b56ec2f91f1c383083e53cda3d7c1d88290e6f4289b30a13466961b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}