{
  "manageEntity": {
    "action": "Save",
    "entityId": "1426980124",
    "entityType": "Track",
    "nonce": "0xcdf3d2278e4beccfcf041dee4f5b005d241775b5aa0a347d830af9fff9fedc79",
    "signature": "0x8c204fa23a8b6f4743ec650efc87faacf8c93168ee9f23f4a27788318ba22aff7930749fc94429b1e9bc8f6ce94511404511f68f6331bef7f35cfb764f4d1f391c",
    "signer": "0x4D386A3060c2b887771faBC7ab3462336663fAF3",
    "userId": "271191164"
  }
}