{
  "manageEntity": {
    "action": "Save",
    "entityId": "1710808613",
    "entityType": "Track",
    "nonce": "0x9367ef506343c346e2cbde12ad9440bb03a02b91db62c0d2f1196dd570726e6c",
    "signature": "0x781ef531ecc6b8c6e0b198d2d09aaf08d1c56623cc4f59280fe0ab02ae5aec953d994ed371daa2685d64f81ff02f28a7e2a44c2f90186f229983021fa0ffe9231b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}