{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "528782",
    "entityType": "Track",
    "nonce": "0xf4588d108718745bf99d63c344a3729741865ff5293062422827ea9ef47afe63",
    "signature": "0xc56e9adfdb1db6d68b0da73b8969ce0d15ab1562d89c34e4f4c0f15d445532fe693abaee430175b4e4073faf6621e7f0620f34b33aac4c5a328193face755da11c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}