{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0xa16da72171fdfc21ca0ce711d16fb881e7537ac64e705c7fd7ad7b472e657759",
    "signature": "0xcd0715283cf23e7b90af3232e41f57c4016b8d9b1a6c359d9c9b8fbe8fa5060c2cbb125339f9e71caeebab7fa3486908ba442b8af69fc0cc1491234898a1a3dc1b",
    "signer": "0xeCb28F2b00EB20f4Ebe64748030b3e68b882A2ec",
    "userId": "365239956"
  }
}