{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "161101410",
    "entityType": "Track",
    "nonce": "0x17e46e8ddabb470805626532ece7e41ba3fe8ebc917b05e03139f0057f17bfe5",
    "signature": "0x6d8814b2347c0b6bb98c5894001de40a42e57b726bf0cd598bb32b2cad12abcb3b42301c5c56ba9307f2c5947e87d7119d870dcb65fbd6b94e5bfbf8c200759f1b",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}