{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xb427fe917fbeeef8ae295001d17223da1caa89804260cc358eabb255f3c6ba33",
    "signature": "0x6d8cd603a0eebeb39e825eff8004f43405ec35a7aedc813ccf1be2891240cd1406496aae7f4623a108733acfdf29f77e8590a318469c75fed3f8b86ab65e47f81b",
    "signer": "0xa4A8a4853051b18e0f0f777693Ce34CF4bCe9385",
    "userId": "634886384"
  }
}