{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1787902965",
    "entityType": "Track",
    "nonce": "0x15c73d5b3e6c3c53ff7792da391b6c01bfe2229bd81cdda8dc081d24da198489",
    "signature": "0xcd8471706d2a9519401ae012dc15107a11f572b99be05272555ef4a4ce0ef3ec1466a65fb45cefd1a2d80441ca608174e168e96c85168728722363bc6563156e1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}