{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeb74db5e9952b4907b044ba4af30c6aa7ffed773c8d23d310caa5a71a5cb6edf",
    "signature": "0xe04d5e30dd16e1978494db8c0fa3ca23148c3d22c074b9988b22e07e70b92d6968867b9f0edb6a4f179d5d321abad8e678735b2633a6ee3107fb0a40f7b665531b",
    "signer": "0x12aD05208c3d5754E1aB9Daea7e8579C4147C5c9",
    "userId": "983312637"
  }
}