{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42741",
    "entityType": "User",
    "nonce": "0x7f7a71885a5a793580ab2c30c104326f385d1518b9d7c5c4b3ce031fdf495256",
    "signature": "0x3bb6acd468c7fcab57456b3de3eb8da0bdff394fddde6f300a8b95f49619053132ddae073d6bc35e523a9e7c66f6ad38a1cc0a2e11da8fe6c5bfb8df53e8bb171b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}