{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "315898",
    "entityType": "User",
    "nonce": "0x1ec752b48a0e031a9d4a7c66189a66ab01ae1d1d5d129802008cf1424f751415",
    "signature": "0xe79a8084ce67c5bc06a734de85ba6fa9c5fc21e3ed1addb1e7c7dc74238a68c95b7f8b28f9af6d0da5212b874fca61c647ad723f373cf0a7fbc23a9aaa3c71d01c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}