{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "234183",
    "entityType": "User",
    "nonce": "0x28e03bd7dfedd1445bdf05cf17348cd4e152941fa48d07fb233db878674abe52",
    "signature": "0xc9ebe9c5e0625e320cf916c64971e616b8420812f410bf03c93e4dd37331d2df40bdc03a62f1acc17fdbd4bdbcaaa49bf0b1ccc2e076243f5f1fbfb2be6827961c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}