{
"manageEntity": {
"action": "Save",
"entityId": "609648331",
"entityType": "Track",
"nonce": "0x0c6b37fb0ffad6513d4fede931ceaaff27ae4385880825b5f84c5ebae1a30a80",
"signature": "0x27976146d49efae4a9bff554e3cd422f9af31d8a8fabaa91b0b3d58026ff84da6f16189effed2d585a3c4b9d9498a325be3234e4286e9938acd4d24640d9e97f1b",
"signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
"userId": "100976759"
}
}