{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "397196",
    "entityType": "User",
    "nonce": "0x97a0d5e6dbf28df997a3a4076b60ce8e9d026db9583b806cf53d37d848660424",
    "signature": "0x1fb7373a6904d1bd0a7d40455c24ffdff2fb96e466e8160c723e8297f6601a107d0c67086d31ec3c2f819f7838a6be928a84e6d363510d2f8c64ff6f769e8c371c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}