{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18918",
    "entityType": "User",
    "nonce": "0x2619972b7ff4f9850dc05365557751c6c5be51edfa7f597fa7ef9d0c1e8f920f",
    "signature": "0x185c8ce0922f8a8f18932a2cf05b788dd971ae56bb8d04306c2a910b3eb1b91617ebb33fdee042fd3229ec972e491c4452599cc8c10030408b971fe76e05d8b51c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}