{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190942",
    "entityType": "User",
    "nonce": "0x2def0d151132113404670eec875b52f0371185c9b73c778fdb523c95f6dc914c",
    "signature": "0xb559471b628ed0f50b7a03ebcc4489f3f6cd1999cfc81d4d2fbd63a9d04f6a3a58f7353296cbca4644817f223c1df142594e9149254cf39c388fb1082205879f1c",
    "signer": "0x16BE3cc7Ee03C75AD10a94fb7234B045D351825c",
    "userId": "66529124"
  }
}