{
  "manageEntity": {
    "action": "Unsubscribe",
    "entityId": "300903",
    "entityType": "User",
    "nonce": "0x4e6f1ba3b4a1f66a611a3060a326959638ff25d02ca95e5f65f366d950ac0a18",
    "signature": "0xc45d99d5bd4d804839fcb56cf9eaa9a953d3feb26d1a1c17556b8e26c540420525a85fb3d3285a7bc0cf5e574b31771e489184265ed9b07d8aac5057b864e5981c",
    "signer": "0x4A868B813a8F5D7C187F9f07a2D7e7A24355Cf3f",
    "userId": "185302"
  }
}