{
"manageEntity": {
"action": "Save",
"entityId": "1611608626",
"entityType": "Track",
"nonce": "0x647fb75a92582bfa6d5832697d7056f98038c989d8af91f02103ed857bc9a03d",
"signature": "0x50f46980214ae1dfa90e839f2f699d060cf4043ef343c624f326c6e34a3aac020c20918e1d058abde0c8fa10d7828b64b44a360f8a3caecb3251eb9e6fd71e591b",
"signer": "0x46e7101c875D60D850099f5251d848716a5CfB80",
"userId": "87961106"
}
}