{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "255664195",
    "entityType": "User",
    "nonce": "0x45b7e565c7d01ce780bacba0e70764e607ac933d5f73f5cb371e73d253f3976d",
    "signature": "0xba4604678eb91b11bcf5878ecd793684ce973069952d4e43848436999a56c5474997150d2b9d759fac572b3994222c547f175da80a35dd179ca8352f8e337f761c",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}