{
  "manageEntity": {
    "action": "Save",
    "entityId": "1026204751",
    "entityType": "Track",
    "nonce": "0x7685dc2932f7844e006ebf4a40431d1831103feb32238d014143425b181a1af9",
    "signature": "0xecbaefd10594e260a0300e3fb095f23d20f17b7a216a4d38730b7f97a40aa9b353bc9bb76dae9e4a4a53fa636d7c89ea09ab92aa5c0d605249a514512211ab4d1c",
    "signer": "0x1eE84320039AD6bA42d9adE98E2a41193A4c98B3",
    "userId": "277046119"
  }
}