{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb97cd58c7f03e9c8c056639cadf86bc6c0eed7da1b467382fa332929ccf397c8",
    "signature": "0xd48f6dbea6da96e2ff883393be3a69876e75ce70aa8a72243c45d7297684e9095207bb940b7b2432077038a8210c57f861bc3b68e2cecb8248298b76f0cf6b381c",
    "signer": "0xAd8FcCC47cB4A94dEED72992b009151D1c13FC8C",
    "userId": "804422713"
  }
}