{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1253996500",
    "entityType": "Track",
    "nonce": "0x768661a8f61d651f271e54751ff83f4ec83d7aa2c6fe39b925d1096522ca6b7f",
    "signature": "0xec734c2d997d66c9d10b0d9ac6de1541cd71f93b07251edd7ae926ede520363e78f455f208eadcace1b8bd84df6072248f8797830ac5406fa43435f1bdf2f2e31b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}