{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x006e0683ddfdfa1b8f027d853d42006f824b93c1d58d521b3f8d2fb923729a7c",
    "signature": "0x3af9a83d246adfa8f65d21ec890e35bbff5462d2fd9c8d74b11ff3b74849e5a8717f36a0ed61d04f16791d1e63c1695fe054f6515cd7448d9c41f5afcf6a4cb81c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}