{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x18efc5f28a34bf65eac6e145fa4b2310886bfbfe9c364521073030a72fbf2295",
    "signature": "0xf3eed4d7183b563f46b1a2b35751340c1545385364e12b2e00d037f6dd811d8644afc01b5d2aed731a990d6c5fc5b3704a36589e1fcd1874a7c0afcd76f2cb691c",
    "signer": "0x71e9dEb09D7231bccA11F8250dc053C41A64a63D",
    "userId": "576764532"
  }
}