{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x444d8c43e8d5a7197bca1c32fd1ac5da0d5dccf1ed4a7a6b9e9f61a25e416cf7",
    "signature": "0x4126c8f2edd4178f91002d6973dd7e4be973051a893ca0a4c953741f32cd5719640aa9d4bd8be5549bfc2dbd49fdea1c5040dd9ae765e014b1a458ca32562e2e1b",
    "signer": "0x812e737A1C352b4DB41D40B05612376F43E83d00",
    "userId": "124170606"
  }
}