{
  "manageEntity": {
    "action": "Save",
    "entityId": "1613326845",
    "entityType": "Track",
    "nonce": "0xb29479dbbc02c8ebcd86ff33f5b88861bc3324d5897909f8bb889f91b57539d9",
    "signature": "0x52badacb04e4a8c15f3efdea881f4b5dfbfe82a916a7e68d2469f01879402f46683b5ba5fbd1c6a9520397ef6ef1a583836fd72805a32fa726f028bf6751d1d01b",
    "signer": "0x83543286A020B366C751fFFF836E2aE3996D3B1d",
    "userId": "410522515"
  }
}