{
  "manageEntity": {
    "action": "Save",
    "entityId": "1453818267",
    "entityType": "Track",
    "nonce": "0xd8aeac43374f7964e3baf0de80cc01f5adeacf58d047bbf8b4f599744193896f",
    "signature": "0xb9e5e41ebc3278061c5b0239ace5ae0840aa6c82716308858eae9410c3d7bdfc783f11a8e079ec61883a7c8346f56325ce3d18ca71e691662ca79ba3dc76a7831b",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}