{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1434578316",
    "entityType": "Track",
    "nonce": "0x591205e70bf7dc016ad2f5691aa7794c9ae1e8c17f519514d90ca6c217b503c5",
    "signature": "0xf4d8768604511639ed6268dd25115e64ffd4d74f5a96e443d057473c25df988c48aadd4bebbe0d949de434907bce38cce05906d361aa8ef6208508e4b6f68d541c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}