{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0f0d1a43b647af38cd368948b1f561b8a971500425e69e50994a644cfcf31a22",
    "signature": "0x32f29af34d46d99cac714c9b50dd60e94d31735ca6f731346c4d66dd9be1220f5bc557f33cae1264b96bf1ad7a260d5cd59be48a5dd438e715f9cceb726a646d1b",
    "signer": "0x5457085B816CAD8ABdf1b4048a0623743B14ae53",
    "userId": "848996801"
  }
}