{
"manageEntity": {
"action": "Save",
"entityId": "628165",
"entityType": "Track",
"nonce": "0x8f3483d1a01ad617c3d06c29257bcd6be1fd7b266df9f6c3a9bcc8c91f1636ae",
"signature": "0x8deef0438a7f83f27656a7ac457f9f1785bf6094a815970a7549347788e0792c653784a130a4288ba81f58775660606c540b2f8e081fb9b32fe67a49086fdd3f1c",
"signer": "0xE0525026F59D952AE2CDA2f28771796C2d7f7D97",
"userId": "348332358"
}
}