{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9752596a3735f8807ab3acaf7cfe9cb5bf72a3324e25bed37569931dbd137fde",
    "signature": "0x96a4fb82c121b24e264039982708236a0584e112aba3b117bc60e2e7b3407e6d1090b84caa2a14e784efa521faa58564f40d6b1ea7d5163afdeca99a5f5c02241c",
    "signer": "0xeD9656baf818EAb27A71cc343064645430D224ca",
    "userId": "541929255"
  }
}