{
  "manageEntity": {
    "action": "Save",
    "entityId": "1682990839",
    "entityType": "Track",
    "nonce": "0x4c39b038412f42cbc241c8940b5d360b172776c65b6e4ab3e121753d5b218730",
    "signature": "0x92a88b9c479a5c9438827d34bc55c7870d01736721a7b61255e0d0ff9169598f670bffb5b5cef94ef9d2b64b6b313637d25222043257fbafafceb3ddfaadf3cc1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}