{
  "manageEntity": {
    "action": "Save",
    "entityId": "1780847072",
    "entityType": "Track",
    "nonce": "0xbc2d388d8499ac015b6905b12806131df2339ffb33ff4816563e635d4918e06f",
    "signature": "0x268a54a8f3fe40c4533e17cf56d332d9da1cc951b787821b420c1061b92767755defc540694fa42ef4ccef2da6cdc7b0aba0ee327a830f81f9f5dbb9b70a84471b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}