{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121563",
    "entityType": "User",
    "nonce": "0xdb0df7b7bf40789485f0f34435e074950b15fd900f7f735b46e0a7a5071b69ff",
    "signature": "0xba8fee5b6a346cc03938691db8d94589fafdfc65a2c8aae3503e98b7d2886b6664735d048dc39ac5fd6b821621e4be7507cd97d18d8b44721f825868052907e51b",
    "signer": "0xdF94159720AB889b4D53EB68Be2E4869f38b9eFc",
    "userId": "863573949"
  }
}