{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "976447177",
    "entityType": "Track",
    "nonce": "0xa6d6c9bac8344c854bac570c9309a5f968136b8626b069a9e47e7afee5cc2bd1",
    "signature": "0x480b2d8ed9fb468ff04e9b2a88296d39f5f3533095997f7c371cadceae6722b46460efe1abffd4829abb34b832ff5d886ef618a46b47ee8091c87430c095c6b61c",
    "signer": "0x5c51216FbbB9B7A562f11267f91f72A7be1e8DE3",
    "userId": "105826"
  }
}