{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "973697165",
    "entityType": "Track",
    "nonce": "0xfd4b6c9f099557e0e37823a3f5ae446f8ddf5d890d43ee8444b2cd301d6cf200",
    "signature": "0x442f6f8a36cf08b6ff96f5a5543424e7def6f9d1434cc3777ccaa228202e032354a6b7d64205a09c45dfc8554fc991ab8d005290bbc8e195dce091c1dafc6c6a1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}