{
  "manageEntity": {
    "action": "Save",
    "entityId": "71869046",
    "entityType": "Track",
    "nonce": "0x17b93b1a3297bbf6dafa3dbc8cc1b9582ea6746604cf62838b8dc0ab1b93ce6c",
    "signature": "0xf433ea104d0cb4300f434e3ee0296045cc89434b297089930ae2a54abfdf14f97f4c57eaee6da862bd03999b0f95860219ca3e769f75aa28b37c6ab420623f4b1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}