{
  "manageEntity": {
    "action": "Save",
    "entityId": "361061949",
    "entityType": "Track",
    "nonce": "0x2dad2d6904bdbba9869e966ca4b3fb257a3b59005743f72e01cde04b9c858efd",
    "signature": "0x361f24cbe46e8d6c403d77f0300682297c8ee0925552d8db400aa8ef8e774e0923826519b25fd7e7374d8276292f7c0c40180d447509700da4f2578ea9bdc87d1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}