{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4210adb04859009eb6eb977a1ec95ab9f17ca1178ed8e8f532737cc8051f3f0f",
    "signature": "0x15cda02195f0c913170caea671dbf15a6d34f9b9ba7bdbac45883bad38da73b20c48cdf179d57d13521261e558269b5dac5119f4e9f5ee751d33c5dd43c22dfc1c",
    "signer": "0xf83661c3240fdFD2176739DD8c0BDE0B1613D738",
    "userId": "341570178"
  }
}