{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xa13e04a16f6aaecf5b3ae674537197ebc901465402b334158dc7d4dc8cf770da",
    "signature": "0x6d4566220f2e81fff2df0264fcffc20e7da0821ba05722f9243f121c982a39ba5a66b14e7ffb3d7dc5be508c0ea170f7d37092622d7e3484d2de29aae74af42f1c",
    "signer": "0xF93D19Fab5127cd0f9f38635C5FFda6891efE22C",
    "userId": "579980336"
  }
}