{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8120439000b26dd483a363cbfd52d929018003d4c611904d914aa8854f1e7fd1",
    "signature": "0x90848c2c397cc46bee09afc5da8afe4632d11e6fb48e0a179a08117528fe85c75f0b942b9d1c486a4e330c288269d92fa9b65d251d328506cdf34bf93b9d9b0f1b",
    "signer": "0x2E841a9E2372464aE0aF894b022ca5FC1EdD2691",
    "userId": "520846963"
  }
}