{
  "manageEntity": {
    "action": "Unsubscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9a354fc836fc0dfca11e4384a8d3853a6b5dd96707eae22697e78372a7e61a31",
    "signature": "0x061c985abb3e175f6fe5735d521547a072081cd4cc7040d484d952e937a41681399e182db639c9c1f9b93eeeed4addef0b32adbe9ebf278f39a0f3a0b54d23951b",
    "signer": "0xDE3686894b1BB7886D5a1995730930c47824F3e6",
    "userId": "323456"
  }
}