{
  "manageEntity": {
    "action": "Update",
    "entityId": "215292509",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"New Playlist\",\"is_private\":true,\"playlist_image_sizes_multihash\":\"baeaaaiqseayaesozr7majrbrkfhvc6nvhnebfxtzo6jwzl2cqla66u3wsi4yc\",\"release_date\":\"2026-05-21T19:56:41.000Z\",\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":true,\"playlist_contents\":[{\"timestamp\":0,\"metadata_timestamp\":1779393445,\"track_id\":1605946302},{\"timestamp\":0,\"metadata_timestamp\":1779393451,\"track_id\":96789}]}}",
    "nonce": "0x4d9b85cf6ac1180de2cacd00f5a0796c34e0cc83bbe6e5c57b61378a20a1e82e",
    "signature": "0xb3c94bbe2ffbeeb7f3e2767a622acaf72d5c9b607a14fd64ee9bd720d7c388fd681942fbb765071e21a3ac6134178540a73b470d051aad4527475ae4010cee9c1b",
    "signer": "0xD7c3dC9EEf2D94568C0e1A9C88b58696850c7C22",
    "userId": "125737"
  }
}