{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "388344",
    "entityType": "User",
    "nonce": "0xe76e5a25fe5cd99a28d28417e780623e0c78551be7b65f1064af35582f00b4bb",
    "signature": "0x78ab89ee4c17a37dd493626bf084ee1edbeac791948c78f60f9616715fe277207faf1b1934b2b0ba4dbc8cadb0c908486c21ac790e11ae48abd9fccd016b054a1b",
    "signer": "0x3B15C1247a5CC34F846b88f0E04B262f39b05C1e",
    "userId": "563285188"
  }
}