{
  "manageEntity": {
    "action": "Unsubscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x592c2360021276a339ba85f69adf117eaf4a1f63f6d719593f3f9bb5839c03f5",
    "signature": "0xf9f9970d917753febe15030edb6c692dd3d749059fc5b604311cc8a8524a1fdc2d0e60bba785a9ada0f87f3220e00af1531daec0a8d90256750301248c9144051b",
    "signer": "0x7BF745Ab0aE164aD1b31611967641E3A638e9E55",
    "userId": "520341854"
  }
}