{
  "manageEntity": {
    "action": "Save",
    "entityId": "1081771",
    "entityType": "Track",
    "nonce": "0xfaa26e87eb390085d6af0e29402b34fd1e8f7a7065758da81b68a93af8306ebf",
    "signature": "0x0e7e83ee8eec7fb6e298b19afe5346e299c8959d7f8e66b0fe67fe1b90301f7f02327b342208b83617bfddff4127082b364f4cd9386f75c4d80f26a4c50d7f081b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}