{
"manageEntity": {
"action": "Save",
"entityId": "1912641587",
"entityType": "Track",
"nonce": "0x43867b84dbf228ed48404383753f11ba4f36ca1737bb505d061e50f548bca027",
"signature": "0x12e734072d928365a724fbd9b44cd622f990697859341b5120ae253ea2803fde4e6b847ecec1fab4ff3c2812b2a2bfff0edc35b99b4b9601705495d351ea9a0c1c",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}