{
  "manageEntity": {
    "action": "Save",
    "entityId": "1127133",
    "entityType": "Track",
    "nonce": "0x6c8d88a387ea62509544cf3989d984f23ee26db935c77aa0d829405fa592eae9",
    "signature": "0x003dae7e7d2e77a46a61f6c07cd6d95ef8b084be171f9c3de41db3cacdf9a1f14b93b01ddeab72417c94236f5e66f109cd3f2d6ad6e4e61092de284fb77135831b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}