{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "78148",
    "entityType": "User",
    "nonce": "0x1b9012ef2edf79ca78a90d7a0636d041cdb4c992d3620eccc7f3f3a02219124f",
    "signature": "0x0d0f1873652d630196c8a00766662effb96df01ca42cab8f3d2dc17d4fcaaf1f47d849cb6c0982c8d6dadae15c688a827e9fe9333a413b1131a1ac10acacb2c81c",
    "signer": "0x74cE10865978883B54924eF5Bde16e92D31A0d49",
    "userId": "483269989"
  }
}