{
  "manageEntity": {
    "action": "Save",
    "entityId": "175164",
    "entityType": "Track",
    "nonce": "1789846359631741355",
    "signature": "0x482e62aed5821a5b6340415e36367cd55373fcb8f3e573fef29291742e994c921f2596617db4946a71da5f0cd0818c811b4c30cc91118bd7bd0fd27a1acd5e7c1c",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}