{
  "manageEntity": {
    "action": "Save",
    "entityId": "1734210764",
    "entityType": "Track",
    "nonce": "0xf31b8218729920c9ce3cb5bb75e11c9e883d116112901849229012c35347aa87",
    "signature": "0x524ad3c4f9655a9000ba50f439fc971051317510360d7813539c1afbd133f46164ed56aed7e3784526c6a4b8bcff4e20d84b5a7aab3c1be162a204ceaeeb76851c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}