{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x861a91c2823eccffc6c92df5bb511cc7f2fb9e2fddd03533d55ba01004ac9141",
    "signature": "0x5b1954b94e9f42048b2c6cffd065a5de816a57003764384634ae5b1e5719e4104863986a28d9163989749eafabec5dc4fd57bc27058b961d2c2cb2ea77d6b6691c",
    "signer": "0xdA4565Aff71E89bd0dD0a76470E7c3B53bDf979d",
    "userId": "450772943"
  }
}