{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "399726512",
    "entityType": "User",
    "nonce": "0x42d3694721b575556ab826f103ff6bc1182ec3a0c9a48c3ef12b8997c43b2f34",
    "signature": "0x0163be6a9798958b9b66a05b70b319495350445b95adbbb08c55ce2c0e5b43ee783bd766c876615e3e6cfe2ab36e4b6ec87bf723a9a9f1d010a8e6656054d8721b",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}