{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "296063718",
    "entityType": "User",
    "nonce": "0x121379d421244c7ca23377b68e41f1ee0a2eda519fc41fdf1096989ed86be7e1",
    "signature": "0x74f37db8bf59982b190a9c66a10fb446a08f1fca383b4e390b5a1b98bf3015a469d62146fd3f335510b85e8914560ab07ffce34598f172ae0384c7a38786adc01c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}