{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc9e928a365319becbc451de96743724addd10d24981794f502bb20614a4879a4",
    "signature": "0x527a072c779e747cb9cf903388a74f5a28660e355adc4e62221c98388dfb1e8728adb086dd9c3a43e81294fb18358e5e6f9b16e0949249ef89b08d8edc8b5d2c1b",
    "signer": "0x45F40EB86CAf3f80B8b69db1aC6A8b8EBE39fd04",
    "userId": "968229238"
  }
}