{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203774",
    "entityType": "User",
    "nonce": "0x1ac9c7331c5abfe742adb89f6cd9c952c822cdff6a1681a11b84c3d37bf2ef35",
    "signature": "0x2f3ebc6a13c4a4f25cd36daed440941e789cef3c65e54c525585b0664a52264f68fa650371ec85571758fe9e4ba76074fbd54dc7dd0acca2d2f206fe9f3258d21c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}