{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1225273804",
    "entityType": "Track",
    "nonce": "0x0d76e9b3bc7e44232d1c3f29da81701d99aa5917295c874e0bf32e89caa3a517",
    "signature": "0x537a558a2ae5e86fa1e5eff984d2e8b9e5747256ce301f2128ffbfc925ed144d7dcf4842f866b6688ad6e4f2084a4162e980fa8349bd6aa24489da61e943eac91c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}