{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "2090234900",
    "entityType": "Track",
    "nonce": "0x45d14ea3382f1402cda096de2c2e69130e303db029b27d18688542f938710bd3",
    "signature": "0x18940000fa6aa78c1bd76193c7c1916efdc4f45b2b7d356fae6fb11f440778c4671ddc96a157abf3bed0483c9c797305622718d79c289c624f6aa37e617bdd6c1c",
    "signer": "0xcc9cCc523005B394381478381D34DddB8558A28f",
    "userId": "957873025"
  }
}