{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1507613679",
    "entityType": "Track",
    "nonce": "0xb23c69c1032a18efda9215023a9acb4c884f638f1d50313e639dbc6354ccbbde",
    "signature": "0x4e68a12189f575c06ab5a005970c0aa506f8ff01eee7516a2619c00852acccb57db18ae8655a44238f66b62afc829392fa248c27e120ab505668b2fc825c544d1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}