{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x83cb53b1401710de0be6cb19beb569c3890d1af0d15cea530a95ffb74cc15854",
    "signature": "0x6fca7e2b93ec217da0776b37a18bdf7b9079d21d80edc7f0537528b830d80cbf23c2cfbaf29c65fed1207d7a080a532456c0b1a873b24e7b565334e66dcaf7891c",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}