{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "489026160",
    "entityType": "User",
    "nonce": "0x718911b6b83e965049e2bf869ec80075703c8e6c1346b515c7e7db2fb57c3569",
    "signature": "0xa0eb949ee97649acbb46bc8338ddf55cf39c0a4fd42818828a893bbc469513fd64f8c6c2273086a429668db05d126b17fe97547f6c656879745e4f0d851256b61c",
    "signer": "0x80a0405FB3B9d86d11d9837558C400BE65BE42a4",
    "userId": "464100900"
  }
}