{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe2daed20b562f65221f5d628cc3ebc4f60f41bd82481458e1e067b8ce2d929aa",
    "signature": "0x66f3a857469dcc7cb4536e64a664da71900857d962ea075981ff3fcbddc2e2e4140f873db14292024ac9caf900fea228f87b3914e680555f1881775b1170ec991b",
    "signer": "0x99C6210CCd3fF31e20d657CE96B98b60DA266dEE",
    "userId": "612413797"
  }
}