{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "334539",
    "entityType": "User",
    "nonce": "0x0f06028f38e4efab3c88b5aec3cf34d007db19c6938740c08f017440c9039e6e",
    "signature": "0x3823275f3844a389c9cb4d47bc931e084711bf776ee164ef45cdd634b49985e235380f64f1178e3ab6053b2c6677f544c0ad211ac9abf9bc32ad3b04f099160d1c",
    "signer": "0x0E71C12c426F5C9206F778713f48B60477CA943b",
    "userId": "29088079"
  }
}