{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1937100",
    "entityType": "User",
    "nonce": "0x0d13d33fe7cacea02fee2580fd9f7eaf8cba0ab5f557d1ebb676686249fdf4af",
    "signature": "0xd4db9d264ebd76da76b555d34aa3e194cd6e8ec853b60cc72e4afdb49eb95fd82e8a81a420739b5c525be64a13e0be81ac94c6ffa8266d151a9bd86fa3baeebb1b",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}