{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "235412",
    "entityType": "User",
    "nonce": "0xaf2a408b003c8a587e24a37c2ad3479b42d2111d48e9d4b5f23b34c9565557bb",
    "signature": "0x36614b26feb5038aa584913ad3841af51176a6fb938faf6f258c9daaca3f009627bd7d7c51e4489a2af82ee72e6452299418b7ba20a0f29d5bfc57453bdc20981b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}