{
  "manageEntity": {
    "action": "Save",
    "entityId": "1686582449",
    "entityType": "Track",
    "nonce": "0x5be2a4dd4dbba64abe8982c3870362d23828ab3d874ecb02d04b451aaf0273b9",
    "signature": "0x292fef9f7ddea94c98e98c0ad73545af6edd655ca0beac73dd9a27c0386c64605b9cb60a96457b95fbc653bbe940c9f2dd435ea724acb7358a187ee709a9b8b11c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}