{
  "manageEntity": {
    "action": "Save",
    "entityId": "7482956",
    "entityType": "Track",
    "nonce": "0x56261d53294fb9658c35adc3d247bbcb77da37d999cc3910c2471ae8cd8d4eca",
    "signature": "0x6568016fd1e889d8ad55af5bc94a6f636125f149d7976744f7980c0b6288454f3c3a5db7db54bf4b09a51431d5c141ff3533372b34ee8dafcc80cd4f80696e591c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}