{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "431179929",
    "entityType": "User",
    "nonce": "0x31b745c1095972180f580bf131a1ec339ac6b1dd19f439e41a245908d26cfa5c",
    "signature": "0x4cf2a7fa05fdcda8419f97eaa95c51be973ef3daa650e85069a8f38cf837cceb19b8be2e7c45e93ac5eb107c2a24ec7d8f1ab03501fc2b1ac4e62164db4a7c1a1b",
    "signer": "0x615D57c5E8b7fFe5244a8B3582237DCaB30778ce",
    "userId": "13817"
  }
}