{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3eef9ed8bde699bc2f4b64328d7319f958d729852292774992fb9b64abadcd59",
    "signature": "0xc0f5c7600e871045404bd6b83fbc542261d1f321559806adc5337c140b3174780b02d160762bca62782468678244dc92c40f4b313c87512ab940b81dc8a10a7f1b",
    "signer": "0xbfdb427663B03D3d77E033cdf078dEeFa2E718EB",
    "userId": "120921712"
  }
}