{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1299169339",
    "entityType": "Track",
    "nonce": "0x9d3d30a10977b47bd426d287833fa7ca5aefa4f4a4d021851ec782ba5bbc7507",
    "signature": "0x0be78d58a159cbda6610e528bb018e21945b204b2f02a79f1ae938305f2b9043673fbc3bc6c163623d0fd7248aceb949c2ec9415beea2c7d91e5f0f00bb0150f1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}