{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa85dd2b5273207e9da08d925b255f10919db13d7e92e52f837974b2c8f8bddbf",
    "signature": "0x512ff43f8d9656b23ade1b92450a8f9787d1c4d2a07de1368b5505140193170747a35210ab5053efa5276bbf3e1858ed0bd642c2fdb76b056eefe3690f698d781b",
    "signer": "0xfc52239a349B0823dCE1e993B67c989F3c37498a",
    "userId": "681165804"
  }
}