{
  "manageEntity": {
    "action": "Save",
    "entityId": "1734566360",
    "entityType": "Track",
    "nonce": "0xbaa03e6d02b78011ebe4502d85cace0bff25574282bf2d8100b0800fd270cece",
    "signature": "0x63017d7739aa8a57f7cad92ff054a49089ce4f7e6d3743da7a3cbfc75000c84368dafd40d895319f1f6947c309e028b42e746ef7083f63b6e0cba86668fd45ac1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}