{
  "manageEntity": {
    "action": "Save",
    "entityId": "919691340",
    "entityType": "Track",
    "nonce": "0x07bda43639f21cd6fd112c6528ae09a635180569a7dc0c8fe63f68011720ed40",
    "signature": "0x82de98adea1aad559378356b7554e966a828a7388f1437a8902cc28ecdbb7bdd7ac5534ab471bc64478c160186671474ff7fbc30945d971b44bf8826336c8fea1c",
    "signer": "0xe26C66D5635e0Cfee21F601fAa02c190c7BadE94",
    "userId": "104724985"
  }
}