{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77214",
    "entityType": "User",
    "nonce": "0xb1a532ea793ccf2719d6e571a7b1ca5405d49103d8e6277e295bbdadbf7275f8",
    "signature": "0x3767ccd42237c0663e1c5e15588b8105b490b62fdc7943cb10baebaef233781c390a2894b9ab781285301a1d5a98d126057e244b606f6cdd3f20e73d102d026d1b",
    "signer": "0x615D57c5E8b7fFe5244a8B3582237DCaB30778ce",
    "userId": "13817"
  }
}