{
  "manageEntity": {
    "action": "Save",
    "entityId": "1440288563",
    "entityType": "Track",
    "nonce": "0x9cb7526e475e1da88ec8eba710e57bf6cc368de10f9f6edc82dd295e638eeea9",
    "signature": "0x54c08881c82cf8b3290d3fc6714a3529ce43137362aff8e7ff2fa395036ccc4624974a692465ddf7bd7f7ad1d14fba709a596afbbdbf579cd56bd462877b64fe1c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}