{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "780519636",
    "entityType": "User",
    "nonce": "0xa2476ecc4c18c7c9435cffa8557cd15d485b4ea1947fbadc6b356782fbf1963b",
    "signature": "0x9d90a92847723b1a9500b5a79974fcad903b4f47db8b6a6079f90318b5e7ed1c6ab12a87f7f3c15703c70eab8a8bcd19c0bee889334079a277745f653c277a781b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}