{
  "manageEntity": {
    "action": "Save",
    "entityId": "104596",
    "entityType": "Track",
    "nonce": "1792027548848853975",
    "signature": "0x9da1940da5f483272d80d84aefc6ac546a1acaecb0e569b68b7270da47c566aa592efc39cef2fabb2e6f2a1ea213d9b049760009f3c63fa1ea8ea43f22c39b5f1b",
    "signer": "0x512F9723ECbDB6Dc537A671b3D2fb35CC68017a4",
    "userId": "105562689"
  }
}