{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xf00f2368010e9d28ca855e6e11331d5b2196b7879c6200ffaf2efba4bfc602fc",
    "signature": "0xb0cbb9887eeae060eefbc2fd261eb62fd51558bde879d8861e9951ed8740e1635653aafe92afeaf8732ba25ba555ef7ebdb95fe3b1cd873d29d29ebbe38885d51b",
    "signer": "0x8bd5c03298238332f393D0373090CA1b27A78DC1",
    "userId": "362760707"
  }
}