{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "149415",
    "entityType": "Track",
    "nonce": "0x3191c1e16cd7c6cf4febdfae2ac935d77f81dda1c7ba2161ef599489aec82494",
    "signature": "0x14b90c61e357325534e9d0e1247611c9ec2fe18073c4846e58d7bb935f2e53746bda032c189f699d592e5fe5e908fc8203fdfcefed1bf3b1fd1859353ef9158b1b",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}