{
  "manageEntity": {
    "action": "Save",
    "entityId": "212896575",
    "entityType": "Track",
    "nonce": "0xed19885b60092b8740c6f03657fededd19603592c7553516cc8ce34113623d3a",
    "signature": "0x718887811f7753a1e870162c0f7603190bd80b269eea1ac859aade05378d51ef572af50e2d5578c33dff224ea6e6b723b936da3f30b6a76b55edd1a602a7c72d1b",
    "signer": "0x92a5082636c97Db0Ae888484D85e4c8494A3B791",
    "userId": "895527427"
  }
}