{
  "manageEntity": {
    "action": "Save",
    "entityId": "37262542",
    "entityType": "Track",
    "nonce": "0x502f88057a07b4a3130328090b5d26dc14db4a0a7c5d4b836e7ccc521d06dbc9",
    "signature": "0x83914918de6fe06513a4791b48256750484c1c404df5d5ff3c259a99b94795b81d8d17d72c2c3803515743e555d9af581ffc032e00ec9d60b22dd77c63f56ebf1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}