{
  "manageEntity": {
    "action": "Save",
    "entityId": "265424642",
    "entityType": "Track",
    "nonce": "0x06055bcabd44917d45a19aeb8a4c73589ae65f349426566c1a8f25bfb56c3dfe",
    "signature": "0xf9567e5953015db81e3e38579d4e3bcfd16e69b1ac4a7890a181f7ce3ca889e83bd5d994c3388f7c70e5738d879ac9aadb128b21f879866ba29e391c977080b01b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}