{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "195783022",
    "entityType": "User",
    "nonce": "0x4a19c29659467813976ce65818fe6870567ec355b3b463e353c63e0311ccd8b0",
    "signature": "0x52bbd967b49576470c02cb429c7b6572ff602bbf2417d472c418ba521d25cca1355bb9f7049653b81485bf6c71efb81979421023f0f6c1c7c60b3bde8e9a23321c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}