{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "321668",
    "entityType": "User",
    "nonce": "0x37a2f97aab28ffe669974b9909c9c310424d243798d80e42844ed87515760f6a",
    "signature": "0xc9cda0d9720f4aa743888272c7987b5e5b70d61960be9dbe0c03bbc4ffee7ab123ea3d89f5da1644a49633adfc9f739d599e78efb9b9e35a725dedbbe32b01a61c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}