{
  "manageEntity": {
    "action": "Save",
    "entityId": "1802612042",
    "entityType": "Track",
    "nonce": "0x0f635d5ec781075a7285a981cb5334fc4a5f81bf1f7165d9220aa4e67c3af47c",
    "signature": "0x098c1aeff582ed7d306a68470d5d5d9f2b75ab39265e21e7bac4435f8b7b8ae8492c506f7c35ce8429f32991787a9e038f402c0a71e2a13bf9ab8f2acf15755c1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}