{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3778f1f5d43943b4f3e8ebee2cb1519faaffb5fa1f4eee26a576f052a9035e56",
    "signature": "0xfc86a74092194d3ab88a27c7a9c08e875178608026ba01e4a805e1d825448398401e90c567a4af86ca797e04831e137a06c685c1b685d9516740e4fa7ddff4181b",
    "signer": "0x7791845b665b142C24Fb9Ae33898C02C633391e8",
    "userId": "741017349"
  }
}