{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1350826306",
    "entityType": "Track",
    "nonce": "0xa407be5893764938a24033f202e73707128be519f3d36cddf0690ddd110e84af",
    "signature": "0xf8878868e3c88390beec7a5d15168172af38e6512aec3b5db97f74d10dfba5846c5fd957037147df07edffe50549dbda63046df8c4e736168014b762f0f1f26e1c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}