{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "56663",
    "entityType": "User",
    "nonce": "0xb4a9eefb6a947badb95b4998f3b85b342836687a8d6d430dc10acd7655fee4d9",
    "signature": "0xd8829848de70916933b3f4376affaca2696e834705b135e99f354b160cfa54f51786a8027c23a171f7b4eaae4288e572c0b1998376fe9bb773555924c256586c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}