{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "485987672",
    "entityType": "User",
    "nonce": "0xa0970967b477a9d1c4d399a4c430e026b727b1770028e450b397d2a359350efc",
    "signature": "0x99a031704d40fef969b75b97fa7136eb781b7bdcb5a5e88c0449b3487743990030c6b473c2d9640811349f1765e19670bba2a9c8a6e2a726c7f51145c83438301c",
    "signer": "0xa0C10F709D3c5b2b5FecDEA05B821Ac58bF0c782",
    "userId": "641492277"
  }
}