{
  "manageEntity": {
    "action": "Save",
    "entityId": "2130690207",
    "entityType": "Track",
    "nonce": "0x20c7ee8210e76da9af08c53ca324e074b2e0704cf81098af059b04578c47bd06",
    "signature": "0x90eb40ca7f02725036e82650cbda3b821dcc07902f452cbf8edb32a9142f0841763587c2cf4cfccaa05aabe16ec1b9b7f51ae10911eae869daa2b4309ce2822c1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}