{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "363808",
    "entityType": "Track",
    "nonce": "0xf8d38fa340645dadd1468ffc782abafeecc77d675124a4562a94802eb5f9b9c9",
    "signature": "0xeb0502663d65b1e26a3f2176a0d1417ba98590d90a96a0582872e86da0c2c652071c0308935e23f26fb3207e1989a4f922cdae0a34ef91f37d98e423ff6fe99d1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}