{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "919583",
    "entityType": "Track",
    "nonce": "0x3b2e48c7a6ecd5eb5aa2ed256f191ca281ee4619e3397cbbc72b243d9cc753cd",
    "signature": "0x1953a4fa3fbd41ca43ab41eca3d37c663d39e5dc22161365feeeb054f173d6d73f64c02ddd4b494882dd1b7a18b53e307a6719dd3b02a7c026965bb41da77bb71b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}