{
  "manageEntity": {
    "action": "Save",
    "entityId": "1259086271",
    "entityType": "Track",
    "nonce": "0x4db8b42e12684c6ab9407d9bf2b9d41707b1b2c89f15e8116ae782f5d1535d3e",
    "signature": "0x846ba06906c293dfd9467316ee36b5bb52ce9f1591e93892bcc9a7e24143335e4be5ae6b74077002a4080ddfa49df06c596fe202b2819b9465d9954ff617c9821b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}