{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x309c884d501690a361f84ed04dcea2b2900a0206874cfad12d52bc757f426666",
    "signature": "0x75f4190382725c7003aa34d6fb9045da9c2482ccec036f4628d8aa651c09522e22dc013a07bce4356dad712bba3d71f66153f905a6a1002d8e2e08d7a2e323fd1c",
    "signer": "0xb1B6758E0F16Ff306fc9054B49d73834a7610ACB",
    "userId": "912925478"
  }
}