{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0xb97b52ee63141c9dcc504acc31b178245cf4fdfeaf46670477d47e51add4baec",
    "signature": "0xd89c250e179e0c084c5815b976c77cc444553ee6e6996af0f1ba5619eee01ac6486e000f8c287d909059f6d47ac5de46004e8517cb95a33c2bfa411d911ad4811b",
    "signer": "0xb2B3D446C5A606ee5B3e74e77EE3c96634De4a27",
    "userId": "399675354"
  }
}