{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0c85e5c3b3eb6321ff304c6b6f6726b6d1d79e2b859a1488da115955713fb02f",
    "signature": "0xfe0ea2eb0d6f0aa025212c32ab8cd9419bf08b74482874f7ef03c3f25b0619364c9fea5ef265399eba3fdac5c6582f3bf16f2fd58ab0bfe0098fb00c718dd7611b",
    "signer": "0x2BEcD54aca668Cf7931021c33E4D7444c99f0527",
    "userId": "990026879"
  }
}