{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x53a8a87d569308bbdfdc6b1cae514114102a6f0997063fffea7656554243aa7a",
    "signature": "0xe7257f7cfbf396f140f276704fddedeff994a93cea86dd4274f6a6c34a009cd30a6089a28c84ddd22db9308e0af0b5ce7cecfeff44eeb360d400bd28665afb9a1c",
    "signer": "0xF55Fe5a792273065fDFe42416E030951381E3122",
    "userId": "135636387"
  }
}