{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "317956008",
    "entityType": "Track",
    "nonce": "0x29a48ab9aae4d5a22051cf57615fa3b66672655bac4d0ebab52ef81872010966",
    "signature": "0xd6be7ff9adaf2ab9234db8b2a76b5a178c4ff213209ee647232d909cab6fcf6b026fa4cad700064960b059a284dea82845b1c41fd34190085b28ae5369dafbf01c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}