{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "227970",
    "entityType": "User",
    "nonce": "0xd40129571a16c4d537db3718f9d7ee18930e1c93dc11b94b5f0308f1e9e91d0d",
    "signature": "0x20b883ba742535ac620cb5eb366f493d33ed377fd9543ec2bfe7ec6705a43d8a0cf49d185a58b1d1227b4078bd2817ceac0148ab3ff26b2281dcf3599694b20b1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}