{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1305537573",
    "entityType": "Track",
    "nonce": "0xb47b302c016c5fb4d89af7085f5affa1c517b9e046a531273eaeee60d4e349be",
    "signature": "0xfc6a09221b80f46689b128b7f998f6316088b2160028039ed811aaf0f49ebcb65a77c47e42b59f323ba35515e296a1860a33a36573e6169fef375eaff8ec3a5a1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}