{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1148168308",
    "entityType": "Track",
    "nonce": "0xc57188e5b129feba342fdcd5d6178c359a253b2c1ea52994577f4e0f32891621",
    "signature": "0x3d3702a3d951655c3e7e5d5f2301364c2c2cdc6ebaa09682500f838d6b113aed303bc12ee73b09767f2f4b703e36cbae7cf340240253278cc4f7abfd8d502f031c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}