{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x5a7737aba5a2753e1a96a52fbe02c5ea9ea880845e81b4cf39fb5d1eaf2a5bcf",
    "signature": "0x56fff02e42348bb7364f3b8f14b232463bf87418825888e921947b16b7775f8874f2326aab02028e972ec61050b98428df78f16ed5746a9ec152e75dd45444841b",
    "signer": "0x08a70f29974EFfabc33Bf789b63C0fbCf119F6F7",
    "userId": "470328"
  }
}