{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "645669464",
    "entityType": "User",
    "nonce": "0x393dd86c7302c038ff318ceb3516e44f59f09c545f3466bb4a31eaada0b30b3f",
    "signature": "0x524b83eaaed26320bb049b5d7e1d064f5c068379407f29f42689c72b3467df7d3a836189ff5ddc141b5f89b64cd3fd1495cf5b7b18a9be4480ca3f57d78124ce1c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}