{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "621",
    "entityType": "User",
    "nonce": "0x11a8701fb921e819df9fc70e043d9c6e04bce46c2cd89032d64f377b0a150558",
    "signature": "0x307abba24445098f3d8a6e10c3015d13e3c24d25353381f4d953e122e22cbfff2f88936845d49cafc396db99fcdde6740fd9249a149b42ebce99b32712b5d3341c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}