{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307032107",
    "entityType": "User",
    "nonce": "0x57c3ec2c1b6d919484855b7d1ba2ee63ff9fa10eb28ace7cb225ae8f43ca10a7",
    "signature": "0x71e469e542578599f3af925af6db0faffa1602499acdf16f796e35962d7e757949b2518ace9849ff378c7bc9dbca5aa03b97528a5bb22997c50e4122778a873e1b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}