{
  "manageEntity": {
    "action": "Save",
    "entityId": "269884300",
    "entityType": "Track",
    "nonce": "0x2b4106ef28a231a12f59fd444469fa866aa24cd8881c5418fd4b18f7f1e98305",
    "signature": "0x1e7535edda316218f986e8eda2a5d4d29f111e1212dfb4bf1a478a262b1fecf3435e9b320064d2b8cdc9cfe98e1f8631f5fc30b1fa7903fb75baa4f582feb7b01b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}