{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "983568397",
    "entityType": "User",
    "nonce": "0x3db4a85e190a0043fd243cb6f3bd959a584a62764694863d1fb91849c78a0790",
    "signature": "0x2b9fd9aa0cd84e50cf0496009dc65700bc11a7c211c0ea1a3cd642eaf3db11156e1c2d7963e581a8407a73f82494c157193212c00ad58898eee01b97e538dd8e1c",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}