{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x940054a085ad9306c391e3fbcd618cad6716bff6b7ab1c241d8544fb31735bb6",
    "signature": "0x07c0b35b6ceb38a9162a43e65acc257cc88b223a33b1557c419d0afed6ee9d0378457aaa5838de822f3281b48883d29a44d158275cc67e32d9210bace08fec251b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}