{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "661101608",
    "entityType": "User",
    "nonce": "0x357f34aeabeecea0868a30b54b0a2673b6aed128627be71e35ffc27bdff429d9",
    "signature": "0x8ed4bc864a6527d9dcb9fddbb9861c3ca47947a4505d5d86e8fdd4de9df199c856a3f94baf8bc3586394af5cb6fc28b37dc593aba707a09bb5d087d1d50212d21b",
    "signer": "0x9abB026200c8789A63bEe1891f6C41B319e94634",
    "userId": "436935370"
  }
}