{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64073",
    "entityType": "User",
    "nonce": "0x655110cd9308ac99f4c84fe51ede97a235fbfdfbbd8ca84502cd270da3d63b38",
    "signature": "0x64110db005b902d9559527e120de13468206fa93516fe56797c0ee41008dbf6726ab43f4dcfa6973c6fcfeee5a5a7fcf47d089b60b4bc6950e01e0aab4d6fb101b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}