{
  "manageEntity": {
    "action": "Save",
    "entityId": "2025796664",
    "entityType": "Track",
    "nonce": "1790791707567028169",
    "signature": "0xe27e16876ba34be9f638609794cf0d6df3265f12959a6f9439318d70e4a5a3652a49cc0a8462972673cb4f1b91530a824e1c4f6eb48ce7acd18e0141edd7fdb71b",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}