{
"manageEntity": {
"action": "Save",
"entityId": "589363767",
"entityType": "Track",
"nonce": "0x5811f26daff2a1efc33ca13035909c37294af2e57df25d58c5c51b477fc7a985",
"signature": "0x84d1bf7e47022d433972293b9e1c6676b19f2bf458bb8d642dc398536ee717af13378dc636b472341e6f91267642c21384b809a876821e5b06e3bcaa25d606741b",
"signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
"userId": "377610060"
}
}