{
"manageEntity": {
"action": "Save",
"entityId": "169975",
"entityType": "Track",
"nonce": "1792826501828702273",
"signature": "0xee127e8eda3763a545016c9ee2e6ca313a299dff44f1efd163217580b44b3ecb6b17f395c69f8a7040d41188b0c8c3f370a1b20b86d8bd26dcee786ebe00c2d11b",
"signer": "0x1007e09532BE90331E035838A9E2E0700bB9741a",
"userId": "329513359"
}
}