{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcd3dcda0e0fbfcd0d4447030f37f81ecf3ef1716fafaa59240ceeede684282c1",
    "signature": "0x3628953b0d3dad3df22adadacae0af257adbd86df0c3099c4824d225adb2fb9131d34f93f4ee9e2041a6ce9ab1cd8948e0a3393141176fb0baf5ba2542d445101c",
    "signer": "0x23d55e4F7A8b0F1337072Eb2e5578687000c7566",
    "userId": "737800476"
  }
}