{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54988",
    "entityType": "User",
    "nonce": "0x5113db5a49ed86515d626c155ebd41df175f67a30953b1940e4652971f88436c",
    "signature": "0x506d7607f6ba8c5a6222c11a39172307793f804c75d1930f62d9b5d4779274762cb14c29eabb19f77b07ee281fbfccd565f3e85227dfcfdd0d3adb25bee8b4e11c",
    "signer": "0x16BE3cc7Ee03C75AD10a94fb7234B045D351825c",
    "userId": "66529124"
  }
}