{
  "manageEntity": {
    "action": "Save",
    "entityId": "1186431177",
    "entityType": "Track",
    "nonce": "0x06eb733869e1a50d5a2d71d1c2a17165e93eafb3d9dce02cfdc2834e6fdd0e82",
    "signature": "0xd02faa4de51ead404253b03b3897a7695200c0236f4ee77c2ee4e8f843aabbb515226fbfea27fe5f53d8870b1b1cc019016a98795c858d7f90e3295856e1936e1c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}