{
  "manageEntity": {
    "action": "Save",
    "entityId": "1118037418",
    "entityType": "Track",
    "nonce": "0x78cf4cc8b44b39d78fd976e13d07b26cb86166d9bf68bcb43d65b65df5361707",
    "signature": "0xf12a69f211a2205f8b6cb5b9971d4b51061bccc50fbe765db3b612e58bab98b13f555b7fd195a11eee3fd06e95a61a9314cbc0f1a242aad20ae8686a362113081b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}