{
  "manageEntity": {
    "action": "Save",
    "entityId": "179643445",
    "entityType": "Track",
    "nonce": "0xc8bae6d95383826ecf1f1d80eea554d10776462c4f06c1c7926ed4895984d920",
    "signature": "0x9a98d89fb9e18a1a082bd8c6da236abd115b59c657d1c5ae39f2bc507bfadf9438d1d91ca773d22dfafec81c3d693c08699cca4994f12ede813875b6e36be0571c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}