{
"manageEntity": {
"action": "Save",
"entityId": "651634",
"entityType": "Track",
"nonce": "0xd6c6539215a879a42f99115fdaec33dc745d466554f9b29fcf22aacfae9d4468",
"signature": "0x292faae5eb91934b91dd7c932f2fc2e3d26311d7804f745b4c5d012cdfacf9ef1039e2e09b308fff2ab28e8d771a8f8eae6b5856de579a1ba0c97f0f20580ea81b",
"signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
"userId": "77551267"
}
}