{
  "manageEntity": {
    "action": "Save",
    "entityId": "1266325588",
    "entityType": "Track",
    "nonce": "0xcdd2f7801e8b0de3614d16531415d9f3468adb6f492c383c2baa39f38c6e36e2",
    "signature": "0x0200e45095b4adb7b382eefcee38d7268107dc0509073a1af7e933328c18479149b8363cde1fce18babd4aa196846d028bf9586fcb20b89cf2ca800cd9c097c91b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}