{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "599850968",
    "entityType": "User",
    "nonce": "0x115110add859ffe9af6f4680defcc5d10a578fc2d590abd6ea815bd2ab75bc0e",
    "signature": "0xda2da52d0c5f23ec93d94801c148c1cfdfa9e295e0ddc15f254f15900f8661b175871c58c469e90db54e0cd10f8732f147e14ba8a6e0521bc91698a9ba2d86081b",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}