{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100",
    "entityType": "User",
    "nonce": "0xe5eee60f51691487e48b6a21b2bf70208af44aef49c7b658847b398fb0ab66f6",
    "signature": "0x9825dbf449ce141d5308fb6065c568c4237a947634a9c8717d565a4501c7a5571dbbd0bb754c438fb297e47647c73fb99fd12b514e9c05c774c6be86bfc91b851b",
    "signer": "0x9837C03EAdfA74365Cdf4e01e6840D356104bFab",
    "userId": "911622928"
  }
}