{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "68456",
    "entityType": "User",
    "nonce": "0xb898013ef1060384f3c063568dd26522f11cf6784a1c4151dbb64a2bbf43734c",
    "signature": "0x9cd582d45034c8a7f276c7858f4aace913fff25bcfe7fe7964907d0f03490cea3015004a64485ce47898815c94ac219be62c703bb33bca1a1d8eb56e44e1570a1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}