{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "533552952",
    "entityType": "User",
    "nonce": "0x124d4a51b046f2746ee07099a71a95dd3c0d001f198bb33fd9fdf944f06618b7",
    "signature": "0xb6a79665c2ee20b4fc1b1ae918fa0bf0cbdf925e6331987e40405dce9ef2bd8955cd88f556bc5fea90d3aeee73ef7a955810d46e1c256bb109ed60321ae01e0e1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}