{
  "manageEntity": {
    "action": "Save",
    "entityId": "20367",
    "entityType": "Track",
    "nonce": "0x22c73f74856d64e9b8afe20c15b951cb342c428bb39fdbbcc3345fdcd02fc103",
    "signature": "0xa6eb5a54a84b8b8ba27f6bc8daa4e87e7f5cfd6b656856d06a67e0076499f7ab4ac25ff1b45fa89780e416ed05260c079eff8c7967cd0aed89b114dec02e03401b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}