{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7ef2e0f1196904eccbe8fd3b11899d1f0ff07c5774e67fbd47c2ebb6781bf624",
    "signature": "0x3c2597f14ae06638786a2534a4454acb36b70098982ad5ff531b8cadb9caf4db0dbc318008031cd926e9bcbd959bb68fcf7c2382fd01c1e0f28ea6bf634be33e1b",
    "signer": "0xD4B6aa97d32CbA3f12da9EfE973129E1E154eD92",
    "userId": "824550817"
  }
}