{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257173",
    "entityType": "User",
    "nonce": "0x6c434bb30d74849cf8f11037cfc6f7faf0662e62808cd210aa1727dffe3b5847",
    "signature": "0x6d5708721932d693594581b3e8115eb4fc1d4988eef71dbbee7621b2a0c8a79b4618be7764caa48cbf9519a069d9dd7fa668eaa7a79bef2c4d63437ba581d20c1c",
    "signer": "0x8097f7562D3D2F9cbdBA391c45c0D376E438625d",
    "userId": "51978829"
  }
}