{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355212",
    "entityType": "User",
    "nonce": "0x9d394c193e0de1a2f699df848076258e54f69579483977759c4cf3956bf56630",
    "signature": "0x5f0c80cfe63502f96e8ee7370a5d8c23211a041b3f154f24255ce21c3091ad974774bea7be972d2619b651557c5b496f800586bde221b5c0859227ea0bddae2e1b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}