{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc5cbfd08ef0a3810d83931a2fa6d69f2e9ea6c4cab8c025d61bce1fea8e7249b",
    "signature": "0xec6640d15bb04cad796c41fd1c249df2d4565e3e40928312148e2dc97ee65a73780481cffcb43fabef5f699c8e2225d59e72bfb0055705448ef44ffce945ab651c",
    "signer": "0x61A3501FC0915E68db168ff7922e3666694F1b23",
    "userId": "875705211"
  }
}