{
  "manageEntity": {
    "action": "Save",
    "entityId": "60327322",
    "entityType": "Track",
    "nonce": "0xfa8c1ab91ad015aae555d23be0bba6a1e000e72cd040b25bbd9d61369c04d1dd",
    "signature": "0xa2c2e63234771619bcc3941c420a2a97e9ad48dba0a261af148dc1c00b558bda64db517391a53682c080e67889259f866d226f78ca92315756618124503b0e5b1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}