{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13331",
    "entityType": "User",
    "nonce": "0x90ec87ea0f4dc8c67fe1f650417a0d3c2693ab8bd30ee02ded480d40ab2d0c69",
    "signature": "0xe1961f2ccf792b13b2835c5c5af8a9e08a0069b687b045c9457ff49bac38636c0bd531bbe39b54f91da7cfa4b331a78e16d893c15237b4d6c96d8a7789858f991b",
    "signer": "0x45C682dAb9Cd8ED5e055aC2F6a860Db5F14c27C9",
    "userId": "611525840"
  }
}