{
  "manageEntity": {
    "action": "Save",
    "entityId": "2040242755",
    "entityType": "Track",
    "nonce": "0xc786cd67a3471fefee525bfeca63e34ca6df6f216a258f7739aa6f36dee09885",
    "signature": "0xffc2e0a2bf215d4b2185c04822b43eabc0569ce23731c4163945ab731144979342ae28ad653ed912f5ed586c7f7e92225913be7f4b807f521ec5fbfb28de2e161c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}