{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0x382907b2c8a8a04d65a20e0432f8c0c7772211acbbc611ed86d20c4e79f9a9ef",
    "signature": "0x34a56286e5fed064116c5c9ed11123ffa50114995b2daf360d48d97e674be03149681907ec744f09b997beba07577467527b66f3bf2ada747116c61bb355810a1b",
    "signer": "0x9c1a2996a6DCe12e947BD7C8A755b6150A3eD5f4",
    "userId": "474113241"
  }
}