{
  "manageEntity": {
    "action": "Save",
    "entityId": "943585",
    "entityType": "Track",
    "nonce": "0xeb9cfb8d15523210923e0dc017cc5c45ce34cdf3478560617c8eb720bbaf8809",
    "signature": "0x2955866d7d274b949e196a2ac25d9ba1f9a282d9c0a8753b452b74dc0524999c7506b22bbe8357d8c9304668b5383d7ae348423bc13d517e3dad4faccfe9f9b41b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}