{
  "manageEntity": {
    "action": "Unsubscribe",
    "entityId": "665",
    "entityType": "User",
    "nonce": "0x5999d400ca98b2f282447c6c32de0f420482f2e73615d2973002da81dbe377b8",
    "signature": "0xdba22e6eea15b690747e9db7eff85269bdbfdcd0a8cdc8a660be1c82e51c8f231aee1dd603cbf499e39c0088a9eda19bc45f83f55207d54bd4f8629de4bc15041c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}