{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1475434690",
    "entityType": "Track",
    "nonce": "0xab1040bd089776a864097117056ec61ab5fd850c955568ca2932315ec9c623a6",
    "signature": "0x60caa6339baf77b4e1eedb366ff450d234c47497e53dab717dc534a067c4dd022ed995aa600cce50267b2386fa895f002eacfe4d46bb79dd01a3664239d550c71b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}