{
"manageEntity": {
"action": "Save",
"entityId": "404013507",
"entityType": "Track",
"nonce": "0x30985edf6c8b4f3d9772a1710bd2f1365e609231d705e8942cd9e165ba961345",
"signature": "0xee45f3031c159e91847218c43ba341693ad7997be7b1a58d011296bf2667772f2bb22a2db49d22e9e73c59dd11e91671c2f8649412e7755dff855e4663a319911c",
"signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
"userId": "632918751"
}
}