{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8fe20c6a44c46d0268cd20c101583196509b85b8abdf1ac695f805bec0babea0",
    "signature": "0x6169324ab7dc93b3779351dc981dbbafb7e75662494ab9839ea1309605a48b5e27e6c750384e736eff0a4b6005e6f8912aa89fa8d63d5b5b22b969ff3415f4c91c",
    "signer": "0xfffF643204D053ae5bFC296Aa20F15313084C719",
    "userId": "473911971"
  }
}