{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "964899801",
    "entityType": "User",
    "nonce": "0xbb87ab421d7358b56be11bbe13d46b25877ffe00a2d67028d22f048618d414f4",
    "signature": "0x7ea2751ba41c743bbab089821e21d530fe83ca5fe775890730a6ace3590d5d81003daae6b6fcbf8592c02ab4873c99861927b338bbfd6a201cf7ea7050d670591c",
    "signer": "0xaF260D56498a2d61b204aBc5CAdCbEc98465d11b",
    "userId": "219894195"
  }
}