{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "256479919",
    "entityType": "User",
    "nonce": "0xfe2cba94bd5df1d7a3add9827872038d94a7bce8db4941a8a1a55cda5e696438",
    "signature": "0x32c95e4cab59f8c4191558e3013970a62e2ad2d3e6430f2a91d6b5a2a2468be2621c686c6745da732a5d2573a2da6f6bb493aeefb701869e577aee39850512031c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}