{
  "manageEntity": {
    "action": "Save",
    "entityId": "410006734",
    "entityType": "Track",
    "nonce": "0x616cdc24b256cf53c8a15abe12be538130c1cf83825d2ed97b963dd940310b65",
    "signature": "0xdacf67c15c1ab7dba2e2f9e74cd5b5f561960d8a5375041b8d596c4f214d1d1673cfdc3c23fc7c3cf7436354d7cef4019bbf311845c01a0c69122d0ff2bd4ec61c",
    "signer": "0x767f09338Ac6CE8645c0a76a17a560429b582132",
    "userId": "520958130"
  }
}