{
  "manageEntity": {
    "action": "Save",
    "entityId": "926486",
    "entityType": "Track",
    "nonce": "0xd6f8d887501ec94afc9ff565bc616ee14ab117470af18ca9fe7abb94b322548d",
    "signature": "0xc1a7b22d700851c7fd731c8f44654e5995e8eca6c337af5eccfc7373c39092d45bcb2ecb0ef3ddba0b7968645f231813d2bb4e8b10af4310675817f9c438a9ba1b",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}