{
  "manageEntity": {
    "action": "Save",
    "entityId": "935584",
    "entityType": "Track",
    "nonce": "0x8fd2b00395acb6edf7d7c42a6f02dd4b95a01aaa774681fd68bbd57e594bd5de",
    "signature": "0x3375a9cc3c1f6e2c8c6bc1aae80445deb91fd9b51365c0e85d7124d513ee8162648b5648fed0a694549bc5738c25f42f7353c39ad6631f97a1ae742380bb2fb11c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}