{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1450501",
    "entityType": "User",
    "nonce": "0x0d0e74ab361e2cbe7462e44a7974775596a46512e4ec11a13d6ecf6aa245956e",
    "signature": "0x50543caa45869970e1507d80423aac4e5b6c8f157fdd8c7ccb949308888a98a245c8a3c9215600a9afee7e111664634abaaf3aa35c0e3b721e21449bfd20b5a21c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}