{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "909603442",
    "entityType": "User",
    "nonce": "0x53b8d1154764fff36af284dd3421d79cadb4c7b68587b22bdc3413e8436c8f0c",
    "signature": "0x4e25de345e50e466cb15f5557df22c83193478f797466e7f19f9cf3f10a337ed40daa9889d372c87bc08646d460eccf142f614c0a0ac33cfef86563abae9faa51c",
    "signer": "0x044142FBd4AF7201d53A9BD1d822768a436d6314",
    "userId": "683311144"
  }
}