{
"manageEntity": {
"action": "Save",
"entityId": "1948604462",
"entityType": "Track",
"nonce": "0xea6ff8057863ce8ee9ace01c95db6a13035a571a9217ed8adb9c7e6a0338038e",
"signature": "0x645d94d8c14ccdaf25eab2481799409b957d1b78bfba847af164be06a74e63215bcfef8f345240c15daf8f12edffc7a6168073e2d7e3fd67e9b1417778d67ebd1c",
"signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
"userId": "614212580"
}
}