{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe5bf01b3481faf62bad57ee877f27a7e15c5874fb98452a6213e95d300046c0f",
    "signature": "0xb75c967c60ca4352d59b1c1e71d6a5e6c5ff275b36696caaa1eeb025ccb6154657ac1fa961f14f9f590bbd45e0baac27d6ca8a8397952004b53068bd6914581f1b",
    "signer": "0x4E073b7076371ff6Bf848d0B4abA785B38B5ff1E",
    "userId": "303393509"
  }
}