{
"manageEntity": {
"action": "Save",
"entityId": "251584",
"entityType": "Track",
"nonce": "0xd93c2a3d6a8d835c9455674bd34dafaef0549e2545f4cf6ce97d2fde6538fab1",
"signature": "0xa7bc9a4f7ad7724c456b315f23cdbb24ce5391780e6a48685cf305c66c9033887c00ed3bceeecb250f4cf3457fe2a8b21ac6f5235edc3f529333c305bff69fe81b",
"signer": "0x766d742Cc35188990Dc38CaD8006DEcEe3fAFed5",
"userId": "353834"
}
}