{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "560646",
    "entityType": "Track",
    "nonce": "0x957b33577049020ce3c8374b04f8aacb6d243228557bda868e9e03d689b08eca",
    "signature": "0x8121204e4ddb3137b73acb9a68b17d5f4bff8fbb92252e39541843eb0f0b3de242a6cd2a18654f09f5f203caa0bbd86564a528088aae004a84eea884d126e8b71c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}