{
"manageEntity": {
"action": "Save",
"entityId": "379171056",
"entityType": "Track",
"nonce": "0x53e0e363176d8f099a24b27c305af03a9277953d6c23acf4eb1081cc6ab683f2",
"signature": "0x1de792e33e78fbec5a7bb0496f2b93437ecdd07fd65f1031ea3c0a4990704d3a1e51e6b43f681e5948847a6d31f8179bc6beb454e71bc3301b313e8cccd542c21c",
"signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
"userId": "983568397"
}
}