{
  "manageEntity": {
    "action": "Save",
    "entityId": "190942073",
    "entityType": "Track",
    "nonce": "0xecb1c730871e8e348cf0df28077d40a45347d788fc22c2d7cc2eb289970a515b",
    "signature": "0xc0b87210698320aae298858cf3ee52002fc3cb05369e7f730aa3e00ac218451f3ec6b85c4e9b2c93d208eda090a296c99207e498c50c5147a07d9a35cf9f292d1b",
    "signer": "0x80737CCa077373D199dc8620F35c0cE5969e318e",
    "userId": "100011"
  }
}