{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108190",
    "entityType": "User",
    "nonce": "0xeff11a7ff28f9f7e4a025e0961695f6f10b972fc69d4ecd6459a9da26f8d2c8a",
    "signature": "0xf4fc6d0a2774a8e6de01cb572680aab97bd2ffb02dd592942aad69b144712c52649c2d772e62c686eeb479a273b2ab931fb8344129e0086e41d8cc048e83e8851c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}