{
"manageEntity": {
"action": "Save",
"entityId": "1333577457",
"entityType": "Track",
"nonce": "0x8c680aefc5de042262cdc57a08cb12d278cc823fbddfa0b288fe57b54d9b7cbd",
"signature": "0x17bf6bb5accaf9c5facca459d16887ef5a3d81b106d0fd01922b63ccc032d7a732665d6ef5e0f9e73b6f0a48df7e0d728dfb04a23ffcf08ed2567ac9e9cc24c01b",
"signer": "0xD967b68365738013c9197659aAb46EB73a488080",
"userId": "488430169"
}
}