{
  "manageEntity": {
    "action": "Save",
    "entityId": "82887177",
    "entityType": "Track",
    "nonce": "0x617f7a26bb7e1a57e3a521fe5c6b959c27030239374c6965b12782a51caa3d06",
    "signature": "0xdc579072889a5f83d986f393c62b636384b018f9c94300ed7edaf3a1cb0bd139719f3c78427747b1dc0c807a77d7631100cc14d73c4fe44a6fb6201c8937bd1a1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}