{
  "manageEntity": {
    "action": "Save",
    "entityId": "1978043945",
    "entityType": "Track",
    "nonce": "0x6f8227444eaa69f76b6dce3406d7f8f01a85d0c50a7325d53bd76c54ef636580",
    "signature": "0xf8e5034df24ec7a532b27c5d4daf9beba0371bbf498a3ae4b7143320d589f52b4efd4fa4b13f3eb2824b86caf33d330b764089d414d543749bcb7dd5145b4c471b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}