{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154080",
    "entityType": "User",
    "nonce": "0x4e7939c60cc835fbca7a46dbfcf67538e69d92aa9b89c224dbc2bf8baf3da802",
    "signature": "0xe03f76954de11e023ab5b881ae111a86dcc5c5ff7e3802e99a098c220a736fd631e21f6248046fd6bfd970f9bb8bb14cb7f71a6e66d76da98bbe3e47059429081b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}