{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "133071",
    "entityType": "Track",
    "nonce": "0xd144eb729cc0c87aaad530e3de1ff974383c432b8430c538eb61e4e503a4e92a",
    "signature": "0x43e5a16952510d84bd9926b3d6839aae565d5853d08bc56719aaf730b577761d5135bebc58f17ce629675531289efaa83d0f0869a4b57cc3b90c7b42a4a4d5e01c",
    "signer": "0x5A76eaF1A8E613f7381695733D971a4bE9E568E1",
    "userId": "60415"
  }
}