{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "405573",
    "entityType": "User",
    "nonce": "0x9c5d9c0061779c330a8524f1d68c2f8fcd3fb5a2daabd51099752d2316fd9287",
    "signature": "0x053722f467a834318a477919a54b58b1fe06e8bd1d0cd7447bea5a7bba7da1ab6e1a72a52153bda1fd965476616cc267cfda9ed3ce8fde123fe280c67120899e1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}