{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x2dc619aab93f8b106ef480f768a5e3480a46a7dbcdcaa1a0b484f4e73e2b9619",
    "signature": "0x815864e81ef0e127fc31f01d985beea7702ba3666f8d17832bbf64508240084c559479c7c135c365d1e3d81c45fcf81eca5bede03a2e137a0e4b6ec795eab34e1b",
    "signer": "0xD3e2a2Aeb739263055A5ec4484257b4927578D03",
    "userId": "117667088"
  }
}