{
  "manageEntity": {
    "action": "Unsubscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x96559559df4a325f2bd502a4775804f23011b9742a74b291e3e4e631c52c0fbf",
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    "signer": "0x7F9DE0DcBE9D407b8D2F66935a8ce84F440D48e4",
    "userId": "174567284"
  }
}