{
  "manageEntity": {
    "action": "Unsubscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1ddf5fd196716bda957d3259d14e1abeb1ffda5905c96e32c9979ba5b41b4674",
    "signature": "0x08bf6dbb6b9e3721fb7a19bc606a7fc1ebb6eb882f31494e7b622ab3a6c5837b77bffdeaeff09a4d5a6a2c1846b9a49207d1aaa0903beed4c63a2c7b0f9a80881b",
    "signer": "0x74581C1E1bbb4E936963ED2b03d4015Dc1975548",
    "userId": "309468709"
  }
}