{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x62657a45f175773dd9efbdef8973301501ef5cffee144ea721276f91446bf171",
    "signature": "0x4e5d510799d6044226b8da9c64d45648ced6dc0e623c2b686bc40fc94eb08d812518e7f59116ed11175ffd4ae64fa3eee0b384723040d0f8b5ff8e88a7ecfdb01c",
    "signer": "0x8CD1Da8cC9e6579C92F9995eBBAFF64Be49d7a99",
    "userId": "817536815"
  }
}