{
  "manageEntity": {
    "action": "Save",
    "entityId": "1745292776",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8f1ff0afeee9721a511b78110f139125cf67837d1075e755c9092f0435c31389",
    "signature": "0xf12320cdb1da6a359ee1d824f2ec80731e05050448de59d8562344831a9aa2eb7c6a05617d68fda756cc53d5c590014c1a89a69cf593efbb07e63df6377df1381c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}