{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "388674083",
    "entityType": "User",
    "nonce": "0x712a6f981b56bf6a850f212d6885ce74bb3e148e926174f7d370ecde7bf13dc5",
    "signature": "0xf2cc36bd6ff6976a00c6a977423a8e8ee14cc7580734c2a0a7ff9e34da5e0ec30da9f0fe5523be5a9c2131c0a616c9f6d9cd9d8003d34abaf0082894469085aa1c",
    "signer": "0x5c51216FbbB9B7A562f11267f91f72A7be1e8DE3",
    "userId": "105826"
  }
}