{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x4a5030e831f5784055b5e7b478eaacd892d2420fa3bb7cdfbe25d7ddfdee821d",
    "signature": "0x2a3c9705559001d8eae75438cdc141d811aec9dbff9e33a51b62f18d373c80a802ce69a3c423f352d4caafe1e124cd9b9381653d74cb064add161c315fa67ce01c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}