{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "303041267",
    "entityType": "Track",
    "nonce": "0x879a67229f2262969871ec939e257d8c3602e8c5aee6283490da54258b245a75",
    "signature": "0xe2f8d0c06f6622c780d3ec285e9694845cdfd1915324648a449c7e312d8330cf259bcd16b5e2ce1c03cbc3071744164ea58c47a8697c2eb48afc65fae3edd6a21b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}