{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x02128d73784b616f7b2a25a19caa0c8277462258a9ebba2c71fd5bfe88ed538c",
    "signature": "0x8f01216504aa0d5494694a011e82d4fc29ff505abd44eeccfcff9efe4e25a2c67ee7a228379d652f75c15c61543afe10c58ed668fb5961548d99bd936da946681b",
    "signer": "0x49453344e6cf32d3172b6Aa3Fa67e98Efc2d6284",
    "userId": "220496640"
  }
}