{
  "manageEntity": {
    "action": "Save",
    "entityId": "2052803834",
    "entityType": "Track",
    "nonce": "0x3f4bfcf78abeda09235f7e16b6645a3aee63aa0a19ff1d20bdedf9aa3584b26c",
    "signature": "0x0ff3d855a7a37923321312c57f7df62656cf10658c5eea26db0ea276faa7806301862b2235dc21b33e190040f9cd594231ccfd8c176a57030354858efa33b2491b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}