{
  "manageEntity": {
    "action": "Save",
    "entityId": "798447502",
    "entityType": "Track",
    "nonce": "0x960e3b7fc4e627148d0fab9d4a809428ccd699729975a0a9a75e196e6aeeaf0c",
    "signature": "0x53ad20f69ccdece0363d79eb4fcf1a253f5ded010d884ca9114717d0febc177e130362179abd9b8ea4fad4f3a3a34bcc74866ad5067e607fb05e4f65fa73ba4b1b",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}