{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0xf2a600c8f45e9b034fcde4b642083ca317e7bfb88c9edb86f5ac4e944204eea9",
    "signature": "0xe064d89eb5914e7e65a07533190abd8b670f2630293af1f589ccfc4928985909392ffb2800ec1f7ff99033eb4c9aaacb69fab414681fd538011b26200b295fde1c",
    "signer": "0x9FA029c6E43fD9781215e024e9ae5802602Ed2Db",
    "userId": "738673571"
  }
}