{
  "manageEntity": {
    "action": "Save",
    "entityId": "929049790",
    "entityType": "Track",
    "nonce": "0x27b0301ec4902e83ffe57c05246df6ce74269db7fe722efa0aed7644047d0e1f",
    "signature": "0x1be128db241d39a20060c17b5cc159e1dd268f5077392ab02c13cc57a96236d26d33089421f4c44e05c5bc6538dfbfe299c116cd14edf2a3c62912f0e5cb910d1b",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}