{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x0702d5b3c869287d8c1cff887441c7a2e2db67d97bc721351e6153f220fa1e38",
    "signature": "0x5027ed68f52b1c5e937e709f86b1b5cb12b5ef5b23284a37053cf59c7c301ca36141c448bdb7ce502ed5bb1bc58758dda987aca53d0692a25b82b843b0ca54d31c",
    "signer": "0xD6b69b153d028810DaE9d240FdFa714d984F1D2d",
    "userId": "398213410"
  }
}