{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "539061232",
    "entityType": "Track",
    "nonce": "0xef06cf2042f68fdc72076e8d320e0b87044af0ea37b203780173cc97eb346541",
    "signature": "0x7650e0dfffb842e4ff0008ba237be23c9bba519ea9dac4740dcd15612f019b8069b72a31829184868c729e0bbcbd7bfb47817afcefc083b35c2e0b4826fb84171b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}