{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "183994",
    "entityType": "User",
    "nonce": "0x19cdd5e68c40a867f63420e56d1f03dfba67047bd941faa46910d47c23dccb3e",
    "signature": "0xa5be00f59a279d5df1534b6776e33dcee1654b7f57b40fa28c569d53b4539abc1c921042e1e4163cd6ed9a16797b71aef8b98c8d8f81a0741ef01694afe1f9be1b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}