{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1450501",
    "entityType": "User",
    "nonce": "0xe19e688a2d2c2af0e949499a1b2b295d24b84d8ec002a16eff0765e2997b5f96",
    "signature": "0xda7c964c694041da4c4a62809e610b322e7f9511e9f946bcd8ac0107172bea3e646a5c165df6b0ed6bc7a7fc3b5104723d213a68e21b02c874b275c6be81eed11b",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}