{
  "manageEntity": {
    "action": "Save",
    "entityId": "1564960262",
    "entityType": "Track",
    "nonce": "0xeda36bd2b9fee71f86eaf7f5cca203207e1e7d59d293e45bf529637992a7ab07",
    "signature": "0x7ef5a18de20a75865fe37c3ffc93f46003911012201816ffcdaf768d7b01ca0c0cfde1b20d208b42de0dffb0f9d59d7879ffd316edab84331ddfa4d5b8ae2f161c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}