{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0xc55fadde6552237bf137845d01012745306432fc98a76abd057a7a45a8477179",
    "signature": "0x8ebd8dfbcc9e782a1413e031af3eb0ede179997ba82dea07fb7d5af18f27fb874ef246bba04bf69d55b7c85eb907e7f05769b95950bb6e886518a8a81a2b2fe31c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}