{
  "manageEntity": {
    "action": "Save",
    "entityId": "949687064",
    "entityType": "Track",
    "nonce": "0x0cb0a16a73e2dba86fc21807f28cf3d0addeaf5c445b714b1656e0d0ad322bc5",
    "signature": "0xf27351119b58f10dcee768c17c73408f4ac6547603bf180ac1d6f96926c2e8c2721c07ce69a04ffc4041487fe550354e1829c6b26dcd39313071b875f83c918a1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}