{
  "manageEntity": {
    "action": "Unsubscribe",
    "entityId": "643",
    "entityType": "User",
    "nonce": "0x1187eb010834c895956d5bd0ec411ece8c70a592c6dafb1d900266a79a15f9d8",
    "signature": "0x3f0b32cb85b975f002c1be66395b532fab6422040eafbde7f2e51f0588123c6733ec39b47c11fa75a8e217ccfdb260131d430602eb0b254bfdaeab32dfe3cd3e1c",
    "signer": "0x95B378bAaBcca47f15C460388CAEadc2772f66eb",
    "userId": "140"
  }
}