{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1915619966",
    "entityType": "Track",
    "nonce": "0x145edc77aa3cf6c6331ab8d4bc6005acb169d1a6d0de4bfaf9c4de703363372c",
    "signature": "0xc1a27c2b9d2f86aa186d822ee893ff4acc8e9cc3e03c87b04083208f19ed3aa209b18fcf388fea4fddaae25e8b2aa1daa1d401223f25ddeb8eaff56fdb2737781c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}