{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318",
    "entityType": "User",
    "nonce": "0x8042e8cfc7539bd98d5d12148228a607530f9fe7bc5c52e4b346ca5a3ff8481a",
    "signature": "0xbcaf09409094e944fcc5d5194ac0d7b49e5a31ed1f84c87bf47c0a73ff917f3411a626116dfe270c49ca087e6471a4182c519eb57336332f4406fdb25f82dd611c",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}