{
  "manageEntity": {
    "action": "Save",
    "entityId": "1085942178",
    "entityType": "Track",
    "nonce": "0x1286a80c2366466e5c72e36d363940d56c3d3023e2383898ce63b4ae815b339f",
    "signature": "0x13d11ea81038a88800e4fc5f82c58453b73c7b96c729cec86745e5845bb7067d6a5dd231bf08974e8fa63d7733202ae7ee8dd15557a21b21728be86873e557681b",
    "signer": "0x2CdceEeabf6dc8403D306e7C20eD1Bc4F95f13cE",
    "userId": "373173"
  }
}