{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "914786391",
    "entityType": "User",
    "nonce": "0x7ab886b714cfff91fd7ece0a1d44e319cc3a3fceeb634cf30f25c18b85f88a54",
    "signature": "0xd2e2ad7e4e4d741aff399fc0e1da3e3e061a11a452112ff29b7e58d7430e665d7fea6377610bbe61aea832973be3c50ecdf1209659edb629bdbc4236425a10891c",
    "signer": "0x1ABf6DD41fe1E6b1C2d3A69859a25C92caa31b32",
    "userId": "17689"
  }
}