{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "999692142",
    "entityType": "User",
    "nonce": "0xd9b9d95bfdee535d75d2228d2c13a84ed57f368305ec4c3791922651c152be8e",
    "signature": "0x0868b64d60b2f9e9902f88394e18438e32f63fee7c257a70d8ce6194deae9efb5d0b62023fbb596f64485e153b41e9502a1b79dfe5859f65ccfa16747f6f7b171c",
    "signer": "0x6b89eeF406A3D10E08768E85967dB17cf7EaCd03",
    "userId": "125044"
  }
}