{
  "manageEntity": {
    "action": "Save",
    "entityId": "1045120361",
    "entityType": "Track",
    "nonce": "0xc25d4e9fb1d8d15654963cc9a2c9168ba7e5ba1806b64ce493fc243fb6974601",
    "signature": "0xbe40022621a803c41e96288bad1f1fd67349b78ed11a3f82ca6ac330538aa3fd583d1e960472d409dc0eff8a3522f3400c97ea68533ccffc2f245c6298e0418e1b",
    "signer": "0x88ad765B72fb060B3adbae1FA44A6C64722E1781",
    "userId": "236177"
  }
}