{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "647371104",
    "entityType": "User",
    "nonce": "0x60259a8db05f05189c73f39105dab9140217209d1a532c201ff66cc4b5fe89bd",
    "signature": "0x88789d2969dd2e06a8266a0c4ce857c5969a4c8c202ec0e493f2a392d99b77a215a80a2841a0e83b4161c3c957d69ef91011dbe4a18da65ffce88a43ec1620f31b",
    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
    "userId": "309080"
  }
}