{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa686d0fd0da26e4b762924c9be2c505383c669aeddcb19c42f4677c8e3723a4e",
    "signature": "0xb94a17d567e722969148f829561be20910b10ce8383371e0258a67f4da2d32d14d9a9f59e8010f31d1c0e3c993bc1a178a47e7d97a07dee09a551fa359c1649a1c",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}