{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x74cbe4b7b959723e23c7c8a9e30221aa96c59800d1698d9ecb70e0cd769f74b9",
    "signature": "0xb68f0bac750b6c8b6e63a2c23e35c5dd0cc3e5221f79f5d3ab1e688223f0806a50fbc2a56143da81be4c7a588f186c9a98fc66161e0133a455e64fdf7309eb4b1c",
    "signer": "0x960d5922edd91F164Aa365ed5EcBB02F1F3BE0E8",
    "userId": "598622069"
  }
}