{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2559",
    "entityType": "User",
    "nonce": "0x5da05dd36ef05f6b51aeffb992b8d79ed020c3e03476645fe5c17470eba6a615",
    "signature": "0xdda8d7d807b1752aa4c10119d8b8963ceff2eb1a4f0581fb222020769a418cff0408ef111b6175e5b7a2f253b94512ab5e3aa56fd147d90bc660869719c290f51b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}