{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xa51ab5648606f448f350a10e17c34930d6dc2d51b18dbbef467852acf25fb70b",
    "signature": "0xfefe056abc013a439119e729e666639aea3e8aba489e4ee68dbb97d4086347a54ed277f8025a0a1fb368ac4059ee00083eac5cd3dbd2258769773e2e27cbd9cd1c",
    "signer": "0x98591a180A20DF036EB2C9D2c24B449E65939Df5",
    "userId": "338604526"
  }
}