{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50541",
    "entityType": "User",
    "nonce": "0x25cf8cb6253fc4bc23a3eeceea21deedd5571b7a0d054dcc94055d472d1f9338",
    "signature": "0x5cf581627b20e4758dbe9abe6b02a7fb2268420983eeac8d328555f1e7029b473ed71d56b8903cf963260facf1d658a3071ac7e11085d204c7ce09b7117141ca1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}