{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5a494b0188bf1857c5fc38a377441bb81bc4a61ad8e0132db13011dc4a62b2cb",
    "signature": "0xcdf4f6d10c638f2910322b5a41ece73c7b023142e0fb2583ea4ed8b235ecc4d527c136f130ff21775a0715c56d39088816683fff3686e22761d8077d29dfd2091c",
    "signer": "0xdd5D8856cc04830658A172827fCaC1FC99243EbE",
    "userId": "587492476"
  }
}