{
  "manageEntity": {
    "action": "Save",
    "entityId": "822820836",
    "entityType": "Track",
    "nonce": "0x750706701972b2545f15889f290a89ae68eabcd26ba7803dcf2388ad205d1e03",
    "signature": "0x98c80136287a87f7b38e465009ed10544cdb4865b8035b236a79b298445a93746c8a7cd42cf231a0db27dce50aeac3b413e0d2241c10be4f819d21f082b554c91b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}