{
  "manageEntity": {
    "action": "Unsubscribe",
    "entityId": "345",
    "entityType": "User",
    "nonce": "0x4975395ea708e4889cc09bb600461f0058eafa8a5a1f55ff1be4c03ab7e6fca6",
    "signature": "0x41675b25fdbf3115ac713bfcd5531275f949f5540207c89e109b71dde86b1d690e28173a3d26518322ebdcb1867da46a35db8dff2c0a7f7b363e9327643c314b1c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}