{
  "manageEntity": {
    "action": "Save",
    "entityId": "1127605",
    "entityType": "Track",
    "nonce": "0xfece2b68effc8fc45edfaffdef39f4ab7c4aef078dc22c30e5554fe670cdb3ce",
    "signature": "0x8f481234c49ee49f7beb254eadd66271f741397d90eb670029577383d4e18b5838c37b62e7ebff0e309f1303685650dc023e91566c06a74ab7d98d5a2917493f1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}