{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "29008398",
    "entityType": "Track",
    "nonce": "0x856c92e0fdc9015c02e89f044dd98c8386a7eaa9d885d24bca8c51b4ca657160",
    "signature": "0x68f23334b72f4a5ed04685e6f277ceb8a48439f483399fb5ef865a6af759a1bf419e00340d26cd88f50eb8546bf0a1018df90e3881a32ab0110bdfa3d5fabc051c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}