{
  "manageEntity": {
    "action": "Save",
    "entityId": "1643066834",
    "entityType": "Track",
    "nonce": "0xb6c4d197796baa62a4f06a43890b376a54170214095fbbc7212fc1330c9d8532",
    "signature": "0x36feac8e1a4d582e0624bde624525bbfe92f90040b742e46e2d2a36a7f0cc7c412c2168f17f5d0d806a70c5a3dfe7b2cdfac94d8131244870726e3d5e92efbe31b",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}