{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3115e37706253b862be7e0d65adbb57c1d64fb26b003155aeffac6ce9dd82c7c",
    "signature": "0x085e69451e3e95ebffcfdf7689427d7f7fb1917bf34065985050f461451f885446a8fcbe007582ffedc114ca5884feddda1a0bdae3ccf6f22f96ff8c0307adf51b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}