{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1435628343",
    "entityType": "Track",
    "nonce": "0xfd225d3770217a2b55798ccbc8f21cf04854ef56240515a98202cd95316045e5",
    "signature": "0xcad2e4a832f489b043a4095234be8c9639b32f541dda8e06c5e57ba7eae2b73f1cd3a9b71172699d67fbe8c11eb034099b6d6be53060f8662e182d0ebcad808d1b",
    "signer": "0xD64b2D9033e011ECfbF35b2D18B86a439b9ABBD4",
    "userId": "309071067"
  }
}