{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "948584098",
    "entityType": "User",
    "nonce": "0x3c4b775b487289cc2163bd5ca15ce305e89f259b75fe3ddce9d311ee5ec41f61",
    "signature": "0xd31ce62f8e1130d31e9cfbc21e344e55c813e7fa90c51a36826db9c13d9d694c7844b51fa278a099a914cdbfc99ae60280e01a58ec92dd1bb35b0ae73b9d35f81c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}