{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2b83e293509a058ccd79b1cf3b6e7d6c3bd428de7b190522e53d621035909252",
    "signature": "0x3ba98596a99c3856fd616e9860675cd976b5c8a81cb3d71b5de28098864783277937c24a48af48f67c82806d28d21e22512723a18c95460c46891a8e06163efd1b",
    "signer": "0x5704a6cACD81be1f7Aa2FA1b9B3c575Ad279Bd77",
    "userId": "770031034"
  }
}