{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "888546659",
    "entityType": "User",
    "nonce": "0xbde50d6ae2cb7b6644b96b0528998844ad318f152ab1e7c327c42fa6c97fedd1",
    "signature": "0xd268fe242f3bf86ba2bb6f12e4f109a69dfdbe438dc7b309131d9a6dc5500f2255c1fb879645f51c63b52529b2d8ea3f32d2b267dcf1f809daacdb6f3c7f60a01c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}