{
  "manageEntity": {
    "action": "Save",
    "entityId": "1380397977",
    "entityType": "Track",
    "nonce": "0x1922aa6c9e6e7ded774b5e4cebc4e98155988e164d794f7f2f1c120f85c4172d",
    "signature": "0xbc27c916cb8b36bca0754050799cef5b966e4e0fc10e7e9ddb4aeb6c901a8fb729151a7e0b99e45d8caca2db9842cb2f6c54ee57a507f39c4bc70882d2560bae1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}