{
  "manageEntity": {
    "action": "Save",
    "entityId": "780166509",
    "entityType": "Track",
    "nonce": "0x8d4e9aed27b2a39951d197a8f1e02c71a8ce266c49b30906d600058dc2d94cc5",
    "signature": "0xa32f59bb64ffc48a2b9baec87bf2bde009c3b7292140f3106c5521a71a76047e5d15e15f8f46f2d557b4879d03f57803fda95b4f9f5eac679ea9c62269b7c36f1c",
    "signer": "0x6802Fe39C5FA9f99ac1Aa32F164982185A3E70ea",
    "userId": "152482938"
  }
}