{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1455479752",
    "entityType": "Track",
    "nonce": "0x5563c619cb710a910b3bcbcf3339f2ae4a5119db88f6014b4354bff6fa597fd7",
    "signature": "0x42cf4fdd349a5cdc79dfb0e7d13906c39480bbdb98d5aeae66506267d33377f03efa6455fbf3319b3132cd1743dcb4392b04afc7cf389def764223c2be4193111c",
    "signer": "0xf9331645DEac91fCa6553E0Ed8B90be0088AF8da",
    "userId": "613221822"
  }
}