{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100976759",
    "entityType": "User",
    "nonce": "0x4982c8aabef49a942efe3c6baaffc2a72eceb1720dea113205abefec6a9ad003",
    "signature": "0x4b26ef1f2981cee61ae15a3af44e12981f3e28091f7fcb8e6f67b201652ec38d387c046c79e2cfbc20c0baf6c031f291b55eddd9867837ae5b6d0cf9cd2dd1a41b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}