{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329177",
    "entityType": "User",
    "nonce": "0x68e8bd0661a2d201f74961839fe0048fee88b8c6990873d29d3b41b0ed5f463c",
    "signature": "0xdd7cf0a9a77e1f764b2edea94ce676261e795253adb5f99b0fa9ac0a6bf878cd71f530441b4a67a9839b77c6898559c93cb93152428c528668f1e9214051c3cd1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}