{
  "manageEntity": {
    "action": "Save",
    "entityId": "2020947606",
    "entityType": "Track",
    "nonce": "0x295e78956db50ba286981992997ae22860115227397932f39bc65cf69265d57d",
    "signature": "0x6b7887658701ef98b7b3b2fdf486004361e9eec4f7ea79a00b5620d8ca2248da6d404efb1f42762fb0b9ca98ce918cdedec40fd2817569dec94d52d241cce6401b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}