{
"manageEntity": {
"action": "Save",
"entityId": "872858713",
"entityType": "Track",
"nonce": "0x88b6b7f5c3a61463f02e5a09e17c90ad963a137f4a63694664488363c90e33a2",
"signature": "0x4e785680cfcc37c6ea662a44d3065a2203531752dfeb6740a69fafb82730660b0e2b479eb6458731e363ed56031c94b3fc1572bec36980ca684e6b49424066641b",
"signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
"userId": "728570067"
}
}