{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "334948",
    "entityType": "User",
    "nonce": "0xe21c761a769aa0103e904339928dfe388a7bf0b99680fd2ea32ba368a7ce2c47",
    "signature": "0xb3817696b88313dee519c436c8c6e56a1f9de1c1a58a51ae074f9f59febb1f1326aac2fe85d49bcdbb2a6668affa42e811d24536a920c611b19f6f9a8d7959671c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}