{
"manageEntity": {
"action": "Save",
"entityId": "2138633081",
"entityType": "Track",
"nonce": "0x0e548ee3d567d4a67cb90779be4a6bc3bd79e41610e18e05e01b27d4767e2488",
"signature": "0x73d8fea007219959e74cef7ec967d1ef0e3c1c235399c94959b9f354ef1435fc6bf9c216fe150b73898eabd796c144e5dc3d13c8b36711d4d3cc6802979eb6c91c",
"signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
"userId": "162770660"
}
}