{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "214528491",
    "entityType": "User",
    "nonce": "0x7b6d7947f19736179242a003269e64698b7467f5f5e7e061b8196394e01a2abd",
    "signature": "0xabb36a13c8d5285f4740ad2fe0766adab1c1641047f4260b360dcf3c7510586e743b9d644c24ef2d8a95434ea557150f90006acb28628cc1b7ca63c5b2eed32c1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}