{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x926d699db781241fbacfb0fdaf712e8b24babc3a645754b8528048495ff7f901",
    "signature": "0x2f2efd1475e45e9d72dc25fe9e06da49029a6626dd34d9bb889f1fe80be7bd2d7b242e2b49cc8c49d5fc8759a2a7637c07aec23c399a85e2dd5370b6ed1084c91b",
    "signer": "0x85eEf8ea097ef9044717C3D3FaD6D19Cf8F8DC1f",
    "userId": "828943403"
  }
}